File "photosynthesis-29.html"
Path: /StudyIB/biology/page/605/photosynthesis-29html
File size: 67.12 KB
MIME-type: text/html
Charset: utf-8
<!DOCTYPE html><html lang="EN"><head> <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-PZBWZ8J');</script> <title>Photosynthesis 2.9</title><!-- Removed by WebCopy --><!--<base href="/">--><!-- Removed by WebCopy --><meta http-equiv="x-ua-compatible" content="IE=Edge"><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><link href="../../../css/bootstrap.flatly.min.css" rel="stylesheet" media="screen"><link rel="stylesheet" href="../../../fonts/awesome/css/font-awesome.min.css"><link href="../../../js/jquery-fancybox/jquery.fancybox.min.css" type="text/css" rel="stylesheet"><link rel="stylesheet" href="../../../css/style.min.css?v=202301301645"><meta name="robots" content="index, follow"><meta name="googlebot" content="noarchive"><meta prefix="og: http://ogp.me/ns#" property="og:title" name="og:title" content="StudyIB Biology: Photosynthesis 2.9"> <meta prefix="og: http://ogp.me/ns#" property="og:image" content="https://studyib.net/img/studyib-card-default.jpg"> <meta prefix="og: http://ogp.me/ns#" property="og:description" name="og:description" content="Photosynthesis is introduced in this topic. The main new idea is that the process is not a single step reaction but a sequence of reactions which occur in different parts of the chloroplast."> <meta prefix="og: http://ogp.me/ns#" property="og:url" name="og:url" content="https://studyib.net/biology/page/605/photosynthesis-29"> <meta prefix="og: http://ogp.me/ns#" property="og:site_name" name="og:site_name" content="StudyIB - Your IB learning companion"> <meta prefix="og: http://ogp.me/ns#" property="og:locale" name="og:locale" content="en"> <meta prefix="og: http://ogp.me/ns#" property="og:type" name="og:type" content="website"> <meta name="description" content="Photosynthesis is introduced in this topic. The main new idea is that the process is not a single step reaction but a sequence of reactions which occur in different parts of the chloroplast."> <meta name="image" content="https://studyib.net/img/studyib-card-default.jpg"> <meta name="keywords" content="Revision resources for this topic., IB, IBDP, InThinking, International Baccalaureate, Revision, Revision websites, Student Sites, Students, Learning, Guidance, Exam, Questions, Practice problems, Diagnose, Help, Notes"> <meta itemprop="name" content="StudyIB Biology: Photosynthesis 2.9"> <meta itemprop="description" content="Photosynthesis is introduced in this topic. The main new idea is that the process is not a single step reaction but a sequence of reactions which occur in different parts of the chloroplast."> <meta itemprop="image" content="https://studyib.net/img/studyib-card-default.jpg"> <meta name="twitter:card" content="summary_large_image"> <meta name="twitter:title" content="StudyIB Biology: Photosynthesis 2.9"> <meta name="twitter:description" content="Photosynthesis is introduced in this topic. The main new idea is that the process is not a single step reaction but a sequence of reactions which occur in different parts of the chloroplast."> <meta name="twitter:image" content="https://studyib.net/img/studyib-card-default.jpg"> <meta name="twitter:creator" content="@inthinker"><link rel="stylesheet" href="../../../css/snippets.min.css?v=202209111300"><link rel="stylesheet" href="../../../css/article.min.css?v=202211221000"><link rel="stylesheet" type="text/css" href="../../../js/slick-carousel/slick.min.css"><link rel="stylesheet" type="text/css" href="../../../js/slick-carousel/slick-theme.min.css"><style type="text/css">.filter-sl-only { display: none; }</style><script src="../../../js/ifvisible.min.js"></script><script>ifvisible.setIdleDuration(300);</script><link rel="apple-touch-icon-precomposed" sizes="57x57" href="../../../img/favicon/apple-touch-icon-57x57.png"> <link rel="apple-touch-icon-precomposed" sizes="114x114" href="../../../img/favicon/apple-touch-icon-114x114.png"> <link rel="apple-touch-icon-precomposed" sizes="72x72" href="../../../img/favicon/apple-touch-icon-72x72.png"> <link rel="apple-touch-icon-precomposed" sizes="144x144" href="../../../img/favicon/apple-touch-icon-144x144.png"> <link rel="apple-touch-icon-precomposed" sizes="60x60" href="../../../img/favicon/apple-touch-icon-60x60.png"> <link rel="apple-touch-icon-precomposed" sizes="120x120" href="../../../img/favicon/apple-touch-icon-120x120.png"> <link rel="apple-touch-icon-precomposed" sizes="76x76" href="../../../img/favicon/apple-touch-icon-76x76.png"> <link rel="apple-touch-icon-precomposed" sizes="152x152" href="../../../img/favicon/apple-touch-icon-152x152.png"> <link rel="icon" type="image/png" href="../../../img/favicon/favicon-196x196.png" sizes="196x196"> <link rel="icon" type="image/png" href="../../../img/favicon/favicon-96x96.png" sizes="96x96"> <link rel="icon" type="image/png" href="../../../img/favicon/favicon-32x32.png" sizes="32x32"> <link rel="icon" type="image/png" href="../../../img/favicon/favicon-16x16.png" sizes="16x16"> <link rel="icon" type="image/png" href="../../../img/favicon/favicon-128.png" sizes="128x128"> <meta name="application-name" content="StudyIB: Your IB Learning Companion"> <meta name="msapplication-TileColor" content="#A5BED5"> <meta name="msapplication-TileImage" content="/img/favicon/mstile-144x144.png"> <meta name="msapplication-square70x70logo" content="/img/favicon/mstile-70x70.png"> <meta name="msapplication-square150x150logo" content="/img/favicon/mstile-150x150.png"> <meta name="msapplication-wide310x150logo" content="/img/favicon/mstile-310x150.png"> <meta name="msapplication-square310x310logo" content="/img/favicon/mstile-310x310.png"><script>var stdHash = "6da675cbcb3d25f050b05557349abc79", stdTicket = "082b9c9c4ae3624d";</script><script src="../../../js/user/local-stats.min.js?v=202205311700"></script><link href="../../../css/subjects-frontpage.min.css?v=202302031000" rel="stylesheet"></head><body class="public biology"> <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PZBWZ8J" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript> <div id="top-header"> <div class="wmap general hidden-sm hidden-xs subjects"> <div class="layout-wrapper"> <div class="container-fluid"> <a href=""> <img class="header-thinker" src="../../../img/header-thinker.svg"> </a> <h1> <a href="../../../biology.html"> IBDP Biology </a> <a href="https://inthinking.net" title="inthinking.net" class="inthinking-logo pull-right"> <img src="../../../img/header-logo.svg" style="height: 80px; width: auto;"> </a> </h1> <p class="slogan">InThinking Revision Sites for students</p> <p class="author">Website by <strong>David Faure</strong></p> <p class="updated">Updated 4 February 2023</p> </div> </div> </div> <nav id="public-topnav" class="navbar navbar-default"> <div class="container-fluid"> <div class="navbar-header"> <a class="navbar-brand hidden-md hidden-lg" href="../../../index.htm"> <img class="header-xs-thinker" src="../../../img/header-thinker.svg"> </a> <button type="button" class="collapsed navbar-toggle" data-toggle="collapse" data-target="#subject-navbar-collapse" aria-expanded="false"> <span class="sr-only">Toggle navigation</span> <i class="fa fa-fw fa-2x fa-user"></i> </button> <div class="brand hidden-lg hidden-md hidden-sm"> <a class="brand-xs" href="../../../biology.html"> <strong class="title" style="white-space: nowrap;font-size: 18px;">Biology</strong> </a> </div> </div> <div class="collapse navbar-collapse" id="subject-navbar-collapse"> <ul class="nav navbar-bar navbar-userbox hidden-md hidden-lg"><li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown"><i class="fa fa-fw fa-lg fa-user-circle" style="margin-right: 5px;"></i><span style="font-size: 16px;"></span></a><ul class="dropdown-menu"><li class="dropdown-submenu"><a class="dropdown-toggle" href="#" data-toggle="dropdown"><i class="fa fa-fw fa-globe"></i> Subjects</a><ul class="dropdown-menu"><li></li><li class="active"><a href="../../../biology.html"><i class="fa fa-caret-right"></i> DP Biology</a></li><li class=""><a href="../../../chemistry.html">DP Chemistry</a></li><li class=""><a href="../../../englishalanglit.html">DP English A: Language & Literature</a></li><li class=""><a href="../../../mathsanalysis.html">DP Maths: Analysis & Approaches</a></li><li class=""><a href="../../../mathsapplications.html">DP Maths: Applications & Interpretations SL</a></li><li class=""><a href="../../../physics.html">DP Physics</a></li><li class=""><a href="../../../spanishb.html">DP Spanish B</a></li></ul></li><li class="menu-item"><a href="../../../user.html"><i class="fa fa-fw fa-dashboard"></i> Dashboard</a></li><li class="menu-item"><a href="../../../user/profile.html"><i class="fa fa-fw fa-cog"></i> My profile</a></li><li class="menu-item"><a href="../../../user/messages.html"><i class="fa fa-fw fa-envelope"></i> Messages</a></li><li class="menu-item hidden-md hidden-lg mt-xs-3"><a href="../../../index.htm?logout=1" class="btn btn-primary btn-xs-block"><i class="fa fa-fw fa-lg fa-power-off text-danger"></i>Log out</a></li></ul></li></ul> <ul class="nav navbar-bar"><li class=""><a class="home" href="../../../biology.html"><i class="fa fa-fw fa-home"></i> Home</a></li><li class=""><a class="topics" href="#"><i class="fa fa-fw fa-th-large"></i> Topics</a></li><li class=""><a class="favorites" href="../../../biology.html"><i class="fa fa-fw fa-star"></i> My favorites</a></li><li class=""><a class="" href="../../flashcards.html"><i class="fa fa-fw fa-bolt"></i> Flashcards</a></li><li class=""><a class="qbank" href="../../test-your-knowledge.html"><i class="fa fa-fw fa-question"></i> Question bank</a></li><li class=""><a class="" href="../../blogs.html"><i class="fa fa-fw fa-paperclip"></i> Blog</a></li><li class=""><a class="sitemap" href="../../sitemap.html"><i class="fa fa-fw fa-sitemap"></i> Sitemap</a></li><li class=""><a class="activity" href="../../../biology.html"><i class="fa fa-fw fa-calendar-check-o"></i> My activity</a></li></ul> <ul class="nav navbar-bar navbar-right"> <li> <form class="navbar-form hidden-md hidden-lg" role="search" method="get" action="biology/search"> <div class="input-group"> <input class="form-control nav-search" name="glob" type="search" placeholder="Search..."> <span class="input-group-btn"> <button type="submit" class="btn bg-blue"> <i class="fa fa-search"> </i> </button> </span> </div> </form> <a href="#" class="toggle-menu-search hidden-sm hidden-xs" data-toggle="dropdown"> <i class="fa fa-lg fa-search"></i> </a> </li></ul> </div> </div></nav><nav id="nav-menu-search" class="shadow-bottom hidden-sm hidden-xs" style="display: none;"> <div class="container-fluid"> <form class="" role="search" method="get" action="biology/search"> <input class="form-control nav-search" name="glob" type="search" placeholder="Search Biology..."> <button class="btn btn-sm btn-primary" type="submit"> Search </button> </form> </div></nav><div class="modal fade" tabindex="-1" role="dialog" id="modal-mini-login"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-body"> <button aria-hidden="true" data-dismiss="modal" class="close hidden-xs login-button-close" type="button">×</button> <form method="post"> <div class="form-group"> <input name="user-email" class="form-control" type="text" placeholder="Email"> </div> <div class="form-group"> <input name="user-password" class="form-control" type="password" placeholder="Password"> <input name="user-fp" class="fp" value="d8c893da5db7501669ffeeac46273ba6" type="hidden"> </div> <div class="form-group"> <a href="../../../reset-password.html" class="reset-password" style="font-weight: normal;"> Forgot your password? </a> </div> <div class="form-group"> <button type="submit" name="submit-login" value="1" class="btn btn-primary btn-block text-center"> <i class="fa fa-user fa-fw"></i> Log in </button> </div> </form> </div> </div> </div></div></div><div class="modal fade" id="show-topics" tabindex="-1" role="dialog"><div id="dialog-topics" class="modal-dialog modal-dialog-topics"><div class="modal-content"><div class="modal-body modal-body-topics"><div id="new-frontpage-toplevels-topics" class="frontpage-box"><div class="row"><div class="col-md-4 col-sm-4"><div class="item"><a href="../812/start-here.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">Start here</h3></div><div class="body"><div class="cropper" style="background-image: url('/media/biology/images/00_random-images/post-it-time.jpg'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../2876/paper-1-style-exam-questions.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">Paper 1 style Exam questions</h3></div><div class="body"><div class="cropper" style="background-image: url('../../../chemistry/images/test-images/exams.jpg'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../2896/paper-2-style-exam-questions.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">Paper 2 style Exam questions</h3></div><div class="body"><div class="cropper" style="background-image: url('../../images/00_random-images/cell_corrections2.jpg'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../462/01-cell-biology.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">01 Cell biology</h3></div><div class="body"><div class="cropper" style="background-image: url('/media/biology/images/01_cells/acetabularia_-wikimedia-24-nov-2012.jpg'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../463/02-molecular-biology.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">02 Molecular biology</h3></div><div class="body"><div class="cropper" style="background-image: url('/media/biology/images/02_molecules/simple_molecules_smaller.jpg'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../465/03-genetics-sl.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">03 Genetics SL</h3></div><div class="body"><div class="cropper" style="background-image: url('/media/biology/images/03_genetics/meiosis_painting.jpg'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../466/04-ecology-.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">04 Ecology</h3></div><div class="body"><div class="cropper" style="background-image: url('/media/biology/images/04_ecology/greenhouse_globe.jpg'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../467/05-evolution-.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">05 Evolution</h3></div><div class="body"><div class="cropper" style="background-image: url('/media/biology/images/05_evolution/red_bird_unsplash.png'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../468/06-human-physiology.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">06 Human physiology</h3></div><div class="body"><div class="cropper" style="background-image: url('/media/biology/images/06_humans/gland_square_image.jpg'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../469/07-nucleic-acids-ahl.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">07 Nucleic acids AHL</h3></div><div class="body"><div class="cropper" style="background-image: url('/media/biology/images/03_genetics/dna.png'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../470/08-metabolism-ahl.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">08 Metabolism AHL</h3></div><div class="body"><div class="cropper" style="background-image: url('/media/biology/images/02_molecules/respiration.png'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../471/09-plant-biology-ahl.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">09 Plant biology AHL</h3></div><div class="body"><div class="cropper" style="background-image: url('../../images/09_plants/flower_qn.jpg'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../472/10-genetics-ahl.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">10 Genetics AHL</h3></div><div class="body"><div class="cropper" style="background-image: url('/media/biology/images/10_geneticshl/crossing-over.png'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../473/11-animal-physiology-ahl.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">11 Animal physiology AHL</h3></div><div class="body"><div class="cropper" style="background-image: url('/media/biology/images/11_animalphysiol/muscles.jpg'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../2824/option-a-neurobiology.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">Option A - Neurobiology</h3></div><div class="body"><div class="cropper" style="background-image: url('../../images/12_options/brain.png'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../2852/option-b-biotechnology.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">Option B - Biotechnology</h3></div><div class="body"><div class="cropper" style="background-image: url('../../images/12_options/bioreactor.png'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../2853/option-c-ecology.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">Option C - Ecology</h3></div><div class="body"><div class="cropper" style="background-image: url('../../images/12_options/lemur.jpg'); height: 10vw;"></div></div></a></div></div><div class="col-md-4 col-sm-4"><div class="item"><a href="../2854/option-d-human-physiology.html"><div class="header" style="height: 35px;"><h3 class="title special" style="margin-top: 0;">Option D Human physiology</h3></div><div class="body"><div class="cropper" style="background-image: url('../../images/12_options/hormones_small.jpg'); height: 10vw;"></div></div></a></div></div></div></div></div></div></div></div><div class="container-fluid shadow-ith"><div class="row frontpage"> <div class="col-md-3" id="left-column"> <p class="visible-xs-block"></p><div class="dropdown user-menu hidden-xs" style="margin-bottom: 20px;"> <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" style="border-radius: 0; padding: 6px 18px;"> <i class="fa fa-fw fa-user-circle"></i> <small><i class="fa fa-caret-down"></i></small> </button> <ul class="dropdown-menu"> <li class="dropdown-submenu"><a href="#"><i class="fa fa-fw fa-globe"></i> Subjects</a><ul id="user-subjects-menu" class="dropdown-menu"><li></li><li class="active"><a href="../../../biology.html"><i class="fa fa-caret-right"></i> DP Biology</a></li><li class=""><a href="../../../chemistry.html">DP Chemistry</a></li><li class=""><a href="../../../englishalanglit.html">DP English A: Language & Literature</a></li><li class=""><a href="../../../mathsanalysis.html">DP Maths: Analysis & Approaches</a></li><li class=""><a href="../../../mathsapplications.html">DP Maths: Applications & Interpretations SL</a></li><li class=""><a href="../../../physics.html">DP Physics</a></li><li class=""><a href="../../../spanishb.html">DP Spanish B</a></li></ul></li><li class="divider"></li><li><a href="../../../user.html"><i class="fa fa-fw fa-dashboard"></i> Dashboard</a></li><li><a href="../../../user/profile.html"><i class="fa fa-fw fa-cog"></i> My profile</a></li><li><a href="../../../user/messages.html"><i class="fa fa-fw fa-envelope"></i> Messages</a></li> <li class="divider"></li> <li> <a href="../../../index.htm?logout=1"> <i class="fa fa-fw fa-power-off"></i> Log out </a> </li> </ul></div> <div id="side-nav"><h4 class="side-nav-title dropdown"><a href="../463/02-molecular-biology.html" class="dropdown-toggle toplevel-dropdown" data-toggle="dropdown"><i class="fa fa-ellipsis-v"></i></a> <a href="../463/02-molecular-biology.html">02 Molecular biology</a><ul class="dropdown-menu"><li><a href="../../../biology.html" style="padding-left: 5px; border-bottom: solid 1px #ddd"><i class="fa fa-fw fa-home"></i> Home</a></li><li><a href="../812/start-here.html"><i class="fa fa-fw fa-caret-right"></i> Start here</a></li><li><a href="../2876/paper-1-style-exam-questions.html"><i class="fa fa-fw fa-caret-right"></i> Paper 1 style Exam questions</a></li><li><a href="../2896/paper-2-style-exam-questions.html"><i class="fa fa-fw fa-caret-right"></i> Paper 2 style Exam questions</a></li><li><a href="../462/01-cell-biology.html"><i class="fa fa-fw fa-caret-right"></i> 01 Cell biology</a></li><li><a href="../465/03-genetics-sl.html"><i class="fa fa-fw fa-caret-right"></i> 03 Genetics SL</a></li><li><a href="../466/04-ecology-.html"><i class="fa fa-fw fa-caret-right"></i> 04 Ecology </a></li><li><a href="../467/05-evolution-.html"><i class="fa fa-fw fa-caret-right"></i> 05 Evolution </a></li><li><a href="../468/06-human-physiology.html"><i class="fa fa-fw fa-caret-right"></i> 06 Human physiology</a></li><li><a href="../469/07-nucleic-acids-ahl.html"><i class="fa fa-fw fa-caret-right"></i> 07 Nucleic acids AHL</a></li><li><a href="../470/08-metabolism-ahl.html"><i class="fa fa-fw fa-caret-right"></i> 08 Metabolism AHL</a></li><li><a href="../471/09-plant-biology-ahl.html"><i class="fa fa-fw fa-caret-right"></i> 09 Plant biology AHL</a></li><li><a href="../472/10-genetics-ahl.html"><i class="fa fa-fw fa-caret-right"></i> 10 Genetics AHL</a></li><li><a href="../473/11-animal-physiology-ahl.html"><i class="fa fa-fw fa-caret-right"></i> 11 Animal physiology AHL</a></li><li><a href="../2824/option-a-neurobiology.html"><i class="fa fa-fw fa-caret-right"></i> Option A - Neurobiology</a></li><li><a href="../2852/option-b-biotechnology.html"><i class="fa fa-fw fa-caret-right"></i> Option B - Biotechnology</a></li><li><a href="../2853/option-c-ecology.html"><i class="fa fa-fw fa-caret-right"></i> Option C - Ecology</a></li><li><a href="../2854/option-d-human-physiology.html"><i class="fa fa-fw fa-caret-right"></i> Option D Human physiology</a></li></ul><div class="pull-right"><a class="sidenav-expand" title="Expand all" href="#"><i class="fa fa-plus-circle"></i></a> <a class="sidenav-compress" title="Compress all" href="#"><i class="fa fa-minus-circle"></i></a></div></h4><ul class="side-nav level-0"><li class=""><label style="padding-left: 0px"><i class="fa fa-fw"></i><a href="../577/molecules-to-metabolism-21.html">Molecules to metabolism 2.1</a></label></li><li class=""><label style="padding-left: 0px"><i class="fa fa-fw"></i><a href="../578/water-22.html">Water 2.2</a></label></li><li class=""><label style="padding-left: 0px"><i class="fa fa-fw"></i><a href="../600/carbohydrates-lipids-23.html">Carbohydrates & Lipids 2.3</a></label></li><li class=""><label style="padding-left: 0px"><i class="fa fa-fw"></i><a href="../601/proteins-24.html">Proteins 2.4</a></label></li><li class=""><label style="padding-left: 0px"><i class="fa fa-fw"></i><a href="../585/enzymes-25.html">Enzymes 2.5</a></label></li><li class=""><label style="padding-left: 0px"><i class="fa fa-fw"></i><a href="../602/structure-of-dna-and-rna-26.html">Structure of DNA and RNA 2.6</a></label></li><li class=""><label style="padding-left: 0px"><i class="fa fa-fw"></i><a href="../603/dna-replication-transcription-translation-27.html">DNA Replication, transcription, translation 2.7</a></label></li><li class=""><label style="padding-left: 0px"><i class="fa fa-fw"></i><a href="../604/respiration-28.html">Respiration 2.8</a></label></li><li class="expanded parent selected"><label style="padding-left: 0px"><i class="fa fa-fw"></i><a href="photosynthesis-29.html">Photosynthesis 2.9</a></label></li></ul></div> <div class="hidden-xs hidden-sm"> <button class="btn btn-default btn-block text-xs-center" data-toggle="modal" data-target="#modal-feedback" style="margin-bottom: 10px"><i class="fa fa-send"></i> Feedback</button> </div> </div> <div class="col-md-9" id="main-column"> <h1 class="page_title"> Photosynthesis 2.9 <a href="#" class="mark-page-favorite pull-right" data-pid="605" title="Mark as favorite" onclick="return false;"><i class="fa fa-star-o"></i></a> </h1> <ol class="breadcrumb"> <li><a href="../../../biology.html"><i class="fa fa-home"></i></a><i class="fa fa-fw fa-chevron-right divider"></i></li><li><a href="../463/02-molecular-biology.html">02 Molecular biology</a><i class="fa fa-fw fa-chevron-right divider"></i></li><li><span class="gray">Photosynthesis 2.9</span></li> <span class="pull-right" style="color: #555" title="Suggested study time: 30 minutes"><i class="fa fa-clock-o"></i> 30'</span> </ol> <article id="main-article"> <style type="text/css">ol.breadcrumb { margin-bottom: 0 }</style><div id="toc-1675505955" class="toc"><a href="#" class="toc-switcher" title="Show table of contents"><small><i class="fa fa-reorder"></i> Table of contents <span class="pull-right"><i class="fa fa-chevron-down"></i></span></small></a><ol><li><a href="#header-1" class="scroll-to" data-target="header-1">Summary list for topic 2.9 Photosynthesis</a></li><li><a href="#header-2" class="scroll-to" data-target="header-2">Mindmaps</a></li><li><a href="#header-3" class="scroll-to" data-target="header-3">Exam style question about photosynthesis</a></li><li><a href="#header-4" class="scroll-to" data-target="header-4">Model answer </a></li><li><a href="#header-5" class="scroll-to" data-target="header-5">Exam style question about limiting factors of photosynthesis</a></li><li><a href="#header-6" class="scroll-to" data-target="header-6">Model answer</a><ol></ol></li><li><a href="#header-7" class="scroll-to" data-target="header-7"> 2.9 Photosynthesis quiz 1/1 </a></li></ol><li><a href="#header-8" class="scroll-to" data-target="header-8">Drag and drop activities</a></li></div><div class="intro-card" readonly="false"><img alt="" src="../../images/02_molecules/chloroplast_slsmaller.jpg" style="width: 149px; height: 100px; float: left;">Photosynthesis is introduced in this topic. The main new idea is that the process is not a single step reaction but a sequence of reactions which occur in different parts of the chloroplast. The photosynthetic pigments are attached to membranes and the enzymes for the light independent reactions are found in the liquid stroma.</div> <div class="panel panel-turquoise"> <div class="panel-heading"><a class="expander pull-right" href="#"><span class="fa fa-plus"></span></a> <div> <p>Key concepts</p> </div> </div> <div class="panel-body"> <div> <p>Learn and test your biological vocabulary for 2.9 Photosynthesising these flashcards.</p> <p><iframe frameborder="0" height="420" scrolling="no" src="https://quizlet.com/52155435/flashcards/embed" width="100%"><br> </iframe></p> </div> </div> <div class="panel-footer"> <div> <p>text</p> </div> </div> </div> <div class="panel panel-default"> <div class="panel-footer"> <div> <p>text</p> </div> </div> </div> <div class="panel panel-yellow"> <div class="panel-heading"><a class="expander pull-right" href="#"><span class="fa fa-plus"></span></a> <div> <p>Essentials</p> </div> </div> <div class="panel-body"> <div> <p>These slides summarise the essential understanding and skills in this topic. <br> They contain short explanations in text and images - good revision for all students.</p> <p>Read the slides and look up any words or details you find difficult to understand.</p> <div id="carousel-105" class="dynamic-gallery carousel slide" data-id="105"><div class="carousel-inner" role="listbox"><div class="item active"><a class="fancy" href="../../../std-galleries/5-105/img1b.jpg" data-fancybox="gallery-105" title="" data-caption=""><img alt="" src="../../../std-galleries/5-105/img1b.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-105/img0.jpg" data-fancybox="gallery-105" title="" data-caption=""><img alt="" src="../../../std-galleries/5-105/img0.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-105/img2.jpg" data-fancybox="gallery-105" title="" data-caption=""><img alt="" src="../../../std-galleries/5-105/img2.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-105/img3.jpg" data-fancybox="gallery-105" title="" data-caption=""><img alt="" src="../../../std-galleries/5-105/img3.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-105/img4.jpg" data-fancybox="gallery-105" title="" data-caption=""><img alt="" src="../../../std-galleries/5-105/img4.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-105/img5.jpg" data-fancybox="gallery-105" title="" data-caption=""><img alt="" src="../../../std-galleries/5-105/img5.jpg"></a></div></div><a class="left carousel-control" href="#carousel-105" role="button" data-slide="prev"><i class="fa fa-fw fa-chevron-left"></i></a><a class="right carousel-control" href="#carousel-105" role="button" data-slide="next"><i class="fa fa-fw fa-chevron-right"></i></a></div><ol class="std-carousel-indicators"><li data-index="0"><img title="Click to view" src="../../../std-galleries/5-105/img1b-thumb128.jpg"><li><li data-index="1"><img title="Click to view" src="../../../std-galleries/5-105/img0-thumb128.jpg"><li><li data-index="2"><img title="Click to view" src="../../../std-galleries/5-105/img2-thumb128.jpg"><li><li data-index="3"><img title="Click to view" src="../../../std-galleries/5-105/img3-thumb128.jpg"><li><li data-index="4"><img title="Click to view" src="../../../std-galleries/5-105/img4-thumb128.jpg"><li><li data-index="5"><img title="Click to view" src="../../../std-galleries/5-105/img5-thumb128.jpg"><li></li></ol> </div> </div> <div class="panel-footer"> <div> <p>These slides summarise the essential understanding and skills in this topic. <br> They contain short explanations in text and images - great revision.</p> <p>Read the slides and look up any words or details you find difficult to understand.</p> <div id="carousel-210" class="dynamic-gallery carousel slide" data-id="210"><div class="carousel-inner" role="listbox"><div class="item active"><a class="fancy" href="../../../std-galleries/5-210/112movement-1.jpg" data-fancybox="gallery-210" title="" data-caption=""><img alt="" src="../../../std-galleries/5-210/112movement-1.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-210/112movement-2.jpg" data-fancybox="gallery-210" title="" data-caption=""><img alt="" src="../../../std-galleries/5-210/112movement-2.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-210/112movement-3.jpg" data-fancybox="gallery-210" title="" data-caption=""><img alt="" src="../../../std-galleries/5-210/112movement-3.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-210/112movement-4.jpg" data-fancybox="gallery-210" title="" data-caption=""><img alt="" src="../../../std-galleries/5-210/112movement-4.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-210/112movement-5.jpg" data-fancybox="gallery-210" title="" data-caption=""><img alt="" src="../../../std-galleries/5-210/112movement-5.jpg"></a></div></div><a class="left carousel-control" href="#carousel-210" role="button" data-slide="prev"><i class="fa fa-fw fa-chevron-left"></i></a><a class="right carousel-control" href="#carousel-210" role="button" data-slide="next"><i class="fa fa-fw fa-chevron-right"></i></a></div><ol class="std-carousel-indicators"><li data-index="0"><img title="Click to view" src="../../../std-galleries/5-210/112movement-1-thumb128.jpg"><li><li data-index="1"><img title="Click to view" src="../../../std-galleries/5-210/112movement-2-thumb128.jpg"><li><li data-index="2"><img title="Click to view" src="../../../std-galleries/5-210/112movement-3-thumb128.jpg"><li><li data-index="3"><img title="Click to view" src="../../../std-galleries/5-210/112movement-4-thumb128.jpg"><li><li data-index="4"><img title="Click to view" src="../../../std-galleries/5-210/112movement-5-thumb128.jpg"><li></li></ol> </div> </div> </div> <div class="panel panel-violet"> <div class="panel-heading"><a class="expander pull-right" href="#"><span class="fa fa-plus"></span></a> <div> <p>Summary</p> </div> </div> <div class="panel-body"> <div> <h3 id="header-1">Summary list for topic 2.9 Photosynthesis<img alt="" src="../../../ib/biology/images/flickr_cc_commercial_ok/02_biochem/chloroplast_slsmaller.jpg" style="width: 150px; height: 101px; float: right;"><small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505955" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h3> <ul> <li class="liWithoutP">Photosynthesis uses light energy to produce carbon compounds in cells.</li> <li class="liWithoutP">Visible light ranges from violet (400nm) the shortest wavelength to red (700nm) the longest.<br> (Students are not expected to recall the wavelengths of other colours).</li> <li class="liWithoutP">Absorption spectrum shows - red and blue light absorbed most and green light least (it is reflected).</li> <li class="liWithoutP">Photolysis of water produces oxygen (and also ATP & NADPH).</li> <li class="liWithoutP">Energy ( from photolysis) is needed to produce carbohydrates and other carbon compounds from carbon dioxide.</li> <li class="liWithoutP">Limiting factors of photosynthesis can be; Temperature, light intensity and carbon dioxide concentration.</li> </ul> <div class="yellowBg"> <p><u>Skills</u> (can you ....)</p> <ul> <li>Understand that photosynthesis have caused changes to the Earth’s atmosphere, oceans and rock deposition.</li> <li>Learn how to draw <ul> <li>an absorption spectrum for chlorophyll and</li> <li>an action spectrum for photosynthesis.</li> </ul> </li> <li>Design experiments to investigate the effect of limiting factors on photosynthesis.<br> Ref: control of variables is essential.</li> <li>Separate photosynthetic pigments by chromatography. (Practical 4) either by paper chromatography or thin layer chromatography (gives better results).</li> </ul> </div> <hr class="hidden-separator"> <h3 id="header-2">Mindmaps<small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505955" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h3> <p>This diagram summaries the main sections of topic 2.9.<br> Test if you can draw something like these concept maps from memory.</p> <div id="carousel-104" class="dynamic-gallery carousel slide" data-id="104"><div class="carousel-inner" role="listbox"><div class="item active"><a class="fancy" href="../../../std-galleries/5-104/29photosynthesisspidersimple.png" data-fancybox="gallery-104" title="" data-caption=""><img alt="" src="../../../std-galleries/5-104/29photosynthesisspidersimple.png"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-104/29photosynthesisspider.png" data-fancybox="gallery-104" title="" data-caption=""><img alt="" src="../../../std-galleries/5-104/29photosynthesisspider.png"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-104/29photosynthesisspiderlist.png" data-fancybox="gallery-104" title="" data-caption=""><img alt="" src="../../../std-galleries/5-104/29photosynthesisspiderlist.png"></a></div></div><a class="left carousel-control" href="#carousel-104" role="button" data-slide="prev"><i class="fa fa-fw fa-chevron-left"></i></a><a class="right carousel-control" href="#carousel-104" role="button" data-slide="next"><i class="fa fa-fw fa-chevron-right"></i></a></div><ol class="std-carousel-indicators"><li data-index="0"><img title="Click to view" src="../../../std-galleries/5-104/29photosynthesisspidersimple-thumb128.jpg"><li><li data-index="1"><img title="Click to view" src="../../../std-galleries/5-104/29photosynthesisspider-thumb128.jpg"><li><li data-index="2"><img title="Click to view" src="../../../std-galleries/5-104/29photosynthesisspiderlist-thumb128.jpg"><li></li></ol> </div> </div> <div class="panel-footer"> <div> <p>text</p> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"><a class="expander pull-right" href="#"><span class="fa fa-plus"></span></a> <div> <p>Exam style questions</p> </div> </div> <div class="panel-body"> <div> <h3 id="header-3">Exam style question about photosynthesis<small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505955" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h3> <p>Understanding the separation and identification of photosynthetic pigments is an important skill from this topic.</p> <p>Answer the question below on a piece of paper, then check your answer with the model answer below.</p> <div class="yellowBg"> <p>The image shows the separation of some photosynthetic pigments<strong> </strong>from three leaves A,B and C.</p> <p><img alt="" src="../../images/02_molecules/tlc_plate(1).jpg" style="width: 350px; height: 278px;"></p> <p><strong>Calculate the Rf value of the orange pigments [2]</strong></p> <p><strong>....................................................................................... ............................................................................ </strong></p> <p><strong>....................................................................................... ............................................................................ </strong></p> <p><strong>Suggest, with a reason, whether the three leaves are from the same trees or from different trees. [1] </strong></p> <p><strong>....................................................................................... ............................................................................ </strong></p> <p><strong>....................................................................................... ............................................................................ </strong></p> </div> <p>Click the + icon to see a model answer.</p> <button class="btn btn-xs bg-turquoise showhider"><i class="fa fa-fw fa-plus"></i></button><section class="hiddenbox hidden"> <h3 id="header-4">Model answer <small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505955" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h3> <div class="yellowBg"> <p><strong>Calculate the Rf value of the orange pigments [2]</strong></p> <p><span style="color:#FF0000;">Solvent has moved 2.5 units, the pigment have moved 1.6 units</span></p> <p><span style="color:#FF0000;">The Rf value is = 1.6/2.5 = 0.64</span></p> <p><strong>Suggest, with a reason, whether the three leaves are from the same trees or from different trees. [1] </strong></p> <p><span style="color:#FF0000;">T</span><span style="color:#FF0000;">he three leaves are from different trees</span></p> <p><span style="color:#FF0000;">The reason is that the combination of pigments in each leaf is unique.</span></p> <p><span style="color:#FF0000;">No two leaves share the same combination of pigments.</span></p> </div> </section> <div class="panel panel-has-colored-body panel-expandable panel-has-border panel-default"> <div class="panel-heading"><a class="expander pull-right" href="#"><span class="fa fa-plus"></span></a> <div> <p>Extra exam style question on the limiting factors of photosynthesis click on the + symbol to open it.</p> </div> </div> <div class="panel-body"> <div> <h3 id="header-5">Exam style question about limiting factors of photosynthesis<small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505955" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h3> <p>Understanding the factors that can limit the rate of photosynthesis is an important skill from this topic.</p> <p>Answer the question below on a piece of paper, then check your answer with the model answer below.</p> <div class="yellowBg"> <p><b><span calibri="" style="font-size:11.0pt;line-height:107%; font-family:">Explain how three named environmental factors can affect the rate of photosynthesis. (6 marks)</span></b></p> <hr> <hr> <hr> <hr> <hr> <hr> <p> <em>Examiner's hint: Name the factor and give the explanation of its effect. (1+1 mark)</em></p> </div> <p>Click the + icon to see a model answer.</p> <button class="btn btn-xs bg-turquoise showhider"><i class="fa fa-fw fa-plus"></i></button><section class="hiddenbox hidden"> <h3 id="header-6">Model answer<small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505955" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h3> <div class="yellowBg"> <p><strong>Question: Explain how three named environmental factors can affect the rate of photosynthesis. (6 marks)</strong></p> <ul> <li><span style="color:#FF0000;">Limiting factors are environmental factors that can affect the rate of photosynthesis in particular circumstances.</span></li> <li><span style="color:#FF0000;">At different times of day and in different seasons, limiting factors vary.</span></li> <li><span style="color:#FF0000;">Examples are:</span></li> <li><span style="color:#FF0000;">Light – is the energy source for photosynthesis.</span></li> <li><span style="color:#FF0000;">At dawn and dusk or in winter this may be limiting when light levels are low.</span></li> <li><span style="color:#FF0000;">Temperature – photosynthesis is catalysed by enzymes.</span></li> <li><span style="color:#FF0000;">in cold conditions the rate will be lower as enzyme catalysis is slower.</span></li> <li><span style="color:#FF0000;">Carbon dioxide levels – carbon dioxide is 0.04% of atmospheric gases.</span></li> <li><span style="color:#FF0000;">It is usually the limiting factor when light and temperature levels are sufficient.</span></li> </ul> </div> </section> </div> </div> </div> </div> </div> <div class="panel-footer"> <div> <p>text</p> </div> </div> </div> <div class="panel panel-green"> <div class="panel-heading"><a class="expander pull-right" href="#"><span class="fa fa-plus"></span></a> <div> <p>Test yourself</p> </div> </div> <div class="panel-body"> <div> <p>This is a self marking quiz containing questions covering the topic outlined above.<br> Try the questions to check your understanding.</p> <br><a class="btn btn-primary btn-block text-center" data-toggle="modal" href="#0db0b863"><i class="fa fa-play"></i> START QUIZ!</a><div class="modal fade modal-slide-quiz" id="0db0b863"> <div class="modal-dialog" style="width: 95vw; max-width: 960px"> <div class="modal-content"> <div class="modal-header slide-quiz-title"> <h4 id="header-7"> 2.9 Photosynthesis quiz <strong class="q-number pull-right"> <span class="counter">1</span>/<span class="total">1</span> </strong> <small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505955" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h4> </div> <div class="modal-body p-xs-3"> <div class="slide-quiz" data-stats="5-229-605" style="opacity: 0"> <div class="exercise shadow-bottom"><div class="q-question"><p>Which pigments in plants absorb light and where are they found?</p></div><div class="q-answer"><p><label class="radio"><input class="c" type="radio"> Chlorophyll absorb most red and blue light in the chloroplast.</label></p><p><label class="radio"><input type="radio"> Chromatin absorbs red and green light in the chloroplast.</label></p><p><label class="radio"><input type="radio"> Chlorophyll absorbs mostly red and blue light in the endoplasmic reticulum.</label></p><p><label class="radio"><input type="radio"> Chromatin absorbs green and blue light in the nucleus.</label></p></div><div class="q-explanation"><p>Red and blue light is absorbed by chlorophyll, but very little of the green light.<br>Chlorophyll is attached to the inner membranes of the chloroplasts of plant cells.</p></div><div class="slide-q-actions"><button class="btn btn-default btn-sm btn-xs-block text-xs-center check"><i class="fa fa-check-square-o"></i> Check</button></div></div><div class="exercise shadow-bottom"><div class="q-question"><p>What is the source of energy used by the organelle shown in the image below?</p><p><img alt="" src="../../images/02_molecules/chloroplast.png" style="width: 250px; height: 310px;"></p></div><div class="q-answer"><p><label class="radio"><input type="radio"> Heat from the atmosphere</label></p><p><label class="radio"><input type="radio"> Heat from the sun</label></p><p><label class="radio"><input type="radio"> Chemical energy from the cytoplasm</label></p><p><label class="radio"><input class="c" type="radio"> Light from the sun</label></p></div><div class="q-explanation"><p>Photosynthesis uses light energy to produce carbon compounds in the chloroplasts of cells.</p></div><div class="slide-q-actions"><button class="btn btn-default btn-sm btn-xs-block text-xs-center check"><i class="fa fa-check-square-o"></i> Check</button></div></div><div class="exercise shadow-bottom"><div class="q-question"><p>Which of the following best describes violet light.</p></div><div class="q-answer"><p><label class="radio"><input type="radio"> Violet light has a 700nm wavelength and is not absorbed by photosynthetic pigments.</label></p><p><label class="radio"><input type="radio"> Violet light has a 400nm wavelength and is absorbed by photosynthetic pigments.</label></p><p><label class="radio"><input class="c" type="radio"> Violet light has a 700nm wavelength and is absorbed by photosynthetic pigments.</label></p><p><label class="radio"><input type="radio"> Violet light has a 400nm wavelength and is not absorbed by photosynthetic pigments.</label></p></div><div class="q-explanation"><p>Visible light ranges from violet (400nm) to red (700nm) the longest wavelength.</p><p>There are peaks in the absorption spectrum of chlorophyll at red and blue light.</p><p>Violet light is absorbed by chlorophyll<br>(Students are not expected to recall the wavelengths of colours except red and violet.)</p></div><div class="slide-q-actions"><button class="btn btn-default btn-sm btn-xs-block text-xs-center check"><i class="fa fa-check-square-o"></i> Check</button></div></div><div class="exercise shadow-bottom"><div class="q-question"><p>Which of the following points best describes the absorption spectrum graph below?</p><p><img alt="" src="../../images/02_molecules/absorption_spectrum.png" style="width: 350px; height: 331px;"></p></div><div class="q-answer"><p><label class="radio"><input type="radio"> The graph shows the absorption of light of different intensities.</label></p><p><label class="radio"><input type="radio"> The graph shows the colours of each wavelength of light absorbed.</label></p><p><label class="radio"><input type="radio"> The graph shows how much colour of each wavelength of light is in leaves.</label></p><p><label class="radio"><input class="c" type="radio"> The graph shows how much each wavelength of light is absorbed.</label></p></div><div class="q-explanation"><p>Absorption spectrum shows the amounts of each wavelength of light - red and blue light absorbed most and green light least (it is reflected).</p></div><div class="slide-q-actions"><button class="btn btn-default btn-sm btn-xs-block text-xs-center check"><i class="fa fa-check-square-o"></i> Check</button></div></div><div class="exercise shadow-bottom"><div class="q-question"><p>What is the name of the reactions of photosynthesis which produce oxygen ATP and NADPH?</p></div><div class="q-answer"><p><label class="radio"><input type="radio"> Chloroplast reactions</label></p><p><label class="radio"><input type="radio"> Light independent reactions</label></p><p><label class="radio"><input class="c" type="radio"> Light dependent reactions</label></p><p><label class="radio"><input type="radio"> Carbon fixation</label></p></div><div class="q-explanation"><p>Photolysis of water in the <strong>light independent reactions</strong> produces oxygen ATP & NADPH</p></div><div class="slide-q-actions"><button class="btn btn-default btn-sm btn-xs-block text-xs-center check"><i class="fa fa-check-square-o"></i> Check</button></div></div><div class="exercise shadow-bottom"><div class="q-question"><p>The chloroplast needs two things from the light dependent reactions for it's light independent reactions which make carbohydrates. What are they?</p></div><div class="q-answer"><p><label class="radio"><input type="radio"> Energy in the form of ATP and carbon dioxide</label></p><p><label class="radio"><input type="radio"> Carbon dioxide and hydrogen in NADPH</label></p><p><label class="radio"><input class="c" type="radio"> Energy in the form of ATP and hydrogen in NADPH</label></p><p><label class="radio"><input type="radio"> Oxygen and carbon dioxide.</label></p></div><div class="q-explanation"><p>Energy ( from photolysis) is needed to produce carbohydrates and other carbon compounds from carbon dioxide</p><p>Hydrogen is also needed carried by reduced NADP - NADPH.</p></div><div class="slide-q-actions"><button class="btn btn-default btn-sm btn-xs-block text-xs-center check"><i class="fa fa-check-square-o"></i> Check</button></div></div><div class="exercise shadow-bottom"><div class="q-question"><p>The rate of photosynthesis is usually prevented from increasing by a single factor.</p><p>What is the name given to this factor?</p></div><div class="q-answer"><p><label class="radio"><input type="radio"> Limited factor.</label></p><p><label class="radio"><input class="c" type="radio"> Limiting factor.</label></p><p><label class="radio"><input type="radio"> Temperature</label></p><p><label class="radio"><input type="radio"> Carbon dioxide concentration.</label></p></div><div class="q-explanation"><p>Limiting factors of photosynthesis can be; Temperature, light intensity and carbon dioxide concentration.</p></div><div class="slide-q-actions"><button class="btn btn-default btn-sm btn-xs-block text-xs-center check"><i class="fa fa-check-square-o"></i> Check</button></div></div><div class="exercise shadow-bottom"><div class="q-question"><p>The graph below shows data about the carbon dioxide concentration of the earth's atmosphere over the last 300 million years</p><p><img alt="" src="../../images/02_molecules/co2_atmosphere.png" style="width: 300px; height: 277px;"></p><p>Which of the following best explains why these changes occur?</p></div><div class="q-answer"><p><label class="radio"><input class="c" type="radio"> Photosynthesis has lowered the atmospheric carbon dioxide concentration.</label></p><p><label class="radio"><input type="radio"> Respiration has lowered atmospheric carbon dioxide concentrations.</label></p><p><label class="radio"><input type="radio"> There has been more respiration than photosynthesis over the last 100 million years.</label></p><p><label class="radio"><input type="radio"> The falling temperature is probably due to volcanic eruptions and smoke in the atmosphere.</label></p></div><div class="q-explanation"><p>Understand that photosynthesis have caused changes to the Earth’s atmosphere, oceans and rock deposition.</p><p>Every summer photosynthesis reduces the carbon dioxide concentration of the atmosphere.</p></div><div class="slide-q-actions"><button class="btn btn-default btn-sm btn-xs-block text-xs-center check"><i class="fa fa-check-square-o"></i> Check</button></div></div><div class="exercise shadow-bottom"><div class="q-question"><p>This apparatus below has been set up by a student to investigate photosynthesis.</p><p>They want to find out if the size of flask affects the rate of photosynthesis. <br>The three flasks are 250ml, 500ml and 1000ml volume.</p><p><img alt="" src="../../images/02_molecules/photosysnthesis_expt.png" style="width: 200px; height: 322px;"></p><p>Which factors need to be controlled so that the results can be compared to each other?</p></div><div class="q-answer"><p><label class="radio"><input class="c" type="radio"> Temperature, mass of plants, light intensity.</label></p><p><label class="radio"><input type="radio"> Temperature, the size of the bell jars, and the carbon dioxide concentration.</label></p><p><label class="radio"><input type="radio"> Temperature, carbon dioxide concentration and light intensity.</label></p><p><label class="radio"><input type="radio"> The size of the bell jar, the volume of water and potassium hydroxide.</label></p></div><div class="q-explanation"><p>In this experiment the size of plants, and the temperature, light intensity will need to be controlled.</p><p>Size of the flask is the independent variable and the concentration of carbon dioxide is the dependent variable, used to measure photosynthesis rate.</p></div><div class="slide-q-actions"><button class="btn btn-default btn-sm btn-xs-block text-xs-center check"><i class="fa fa-check-square-o"></i> Check</button></div></div><div class="exercise shadow-bottom"><div class="q-question"><p>By what method do biologists separate photosynthetic pigments extracted from plants?<br>What is the name of this separation technique?</p></div><div class="q-answer"><p><label class="radio"><input type="radio"> Filtration</label><label class="radio"></label></p><p><label class="radio"><input class="c" type="radio"> Chromatography</label></p><p><label class="radio"><input type="radio"> Spot analysis</label></p><p><label class="radio"><input type="radio"> Karyogram</label></p></div><div class="q-explanation"><p>Separate photosynthetic pigments by chromatography. (Practical 4)<br>either by paper chromatography or thin layer chromatography (gives better results)</p></div><div class="slide-q-actions"><button class="btn btn-default btn-sm btn-xs-block text-xs-center check"><i class="fa fa-check-square-o"></i> Check</button></div></div> </div> </div> <div class="modal-footer slide-quiz-actions"> <div class=""> <div class="pull-left pull-xs-none mb-xs-3"> <button class="btn btn-default d-xs-none btn-prev"> <i class="fa fa-arrow-left"></i> Prev </button> </div> <div class="pull-right pull-xs-none"> <button class="btn btn-success btn-xs-block text-xs-center btn-results" style="display: none"> <i class="fa fa-bar-chart"></i> Check Results </button> <button class="btn btn-default d-xs-none btn-next"> Next <i class="fa fa-arrow-right"></i> </button> <button class="btn btn-default btn-xs-block text-xs-center btn-close" data-dismiss="modal" style="display: none"> Close </button> </div> </div> </div> </div> </div></div> <hr> <h3 id="header-8">Drag and drop activities<small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505955" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h3> <p>Test your ability to construct biological explanations using the drag and drop questions below.</p> <div class="tib-quiz" data-stats="5-845-605"><p><strong>Photosynthesis - the essential facts in brief</strong><o:p></o:p></p><p>Drag and drop the correct term into the gap to describe photosynthesis.</p><div class="label label-default q-number">1</div><div class="exercise shadow-bottom"><div class="q-question"><p> </p><p class="gap-drop"> <span class="q-text-draggable draggable" draggable="true">energy</span> <span class="q-text-draggable draggable" draggable="true">carbon dioxide</span> <span class="q-text-draggable draggable" draggable="true">Chlorophyll</span> <span class="q-text-draggable draggable" draggable="true">chemical</span> <span class="q-text-draggable draggable" draggable="true">oxygen</span> <span class="q-text-draggable draggable" draggable="true">inorganic</span> <span class="q-text-draggable draggable" draggable="true">chloroplasts</span> <span class="q-text-draggable draggable" draggable="true">hydrogen</span> <span class="q-text-draggable draggable" draggable="true">light</span> <span class="q-text-draggable draggable" draggable="true">ATP</span> </p></div><div class="q-answer"><p>Photosynthesis is the manufacture of <input type="text" style="height: auto;" data-c="chemical"> <span class="review"></span> energy in the form of carbohydrates from <input type="text" style="height: auto;" data-c="light"> <span class="review"></span> energy in the chloroplast of plants. It produces <input type="text" style="height: auto;" data-c="oxygen"> <span class="review"></span> as a waste product.</p><p>The process requires an <input type="text" style="height: auto;" data-c="energy"> <span class="review"></span> source: sunlight, a carbon source: <input type="text" style="height: auto;" data-c="carbon dioxide"> <span class="review"></span> and a <input type="text" style="height: auto;" data-c="hydrogen"> <span class="review"></span> source: water.</p><p> <input type="text" style="height: auto;" data-c="Chlorophyll"> <span class="review"></span> pigment in the <input type="text" style="height: auto;" data-c="chloroplasts"> <span class="review"></span> in photosynthetic plant cells traps the energy from sunlight to produce <input type="text" style="height: auto;" data-c="ATP"> <span class="review"></span> to provide the energy to drive the anabolic production of organic carbohydrate from <input type="text" style="height: auto;" data-c="inorganic"> <span class="review"></span> compounds.</p></div><div class="q-explanation"><p><em>Explanation - photosynthesis transduces light energy to chemical energy and forms organic carbohydrate from inorganic carbon dioxide and water.</em></p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn btn-default btn-sm btn-xs-block text-xs-center check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p><o:p></o:p></p><div class="totals"><span class="score"></span><button class="btn btn-success btn-block text-center check-total"><i class="fa fa-check-square-o"></i> Check</button></div></div><hr> </div> </div> <div class="panel-footer"> <div> <p>text</p> </div> </div> </div> <div class="panel panel-fucsia"> <div class="panel-heading"><a class="expander pull-right" href="#"><span class="fa fa-plus"></span></a> <div> <p>Just for fun</p> </div> </div> <div class="panel-body"> <div> <p>Everyone needs a little bit of light relief after revising hard. This is a set of fun, retro, arcade games which actually continue to help revision of topic 2.9 Photosynthesis. <a href="http://www.classtools.net/arcade/201903_bNfYm4" target="_blank">Photosynthesis arcade games.</a></p> <ul> </ul> <p align="center"><iframe frameborder="0" height="250" scrolling="no" src="//www.classtools.net/widg/201903_bNfYm4" width="570"></iframe></p> </div> </div> <div class="panel-footer"> <div> <p>text</p> </div> </div> </div> <ul> </ul> <div class="page-container panel-self-assessment" data-id="605"> <div class="panel-heading">MY PROGRESS</div> <div class="panel-body understanding-rate"> <div class="msg"></div> <label class="label-lg">Self-assessment</label><p>How much of <strong>Photosynthesis 2.9</strong> have you understood?</p><div class="slider-container text-center"><div id="self-assessment-slider" class="sib-slider self-assessment " data-value="1" data-percentage=""></div></div> <label class="label-lg">My notes</label> <textarea name="page-notes" class="form-control" rows="3" placeholder="Write your notes here..."></textarea> </div> <div class="panel-footer text-xs-center"> <span id="last-edited" class="mb-xs-3"> </span> <div class="actions mt-xs-3"> <button id="save-my-progress" type="button" class="btn btn-sm btn-primary text-center btn-xs-block"> <i class="fa fa-fw fa-floppy-o"></i> Save </button> </div> </div></div> <div id="modal-feedback" class="modal fade" tabindex="-1" role="dialog"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <h4 class="modal-title">Feedback</h4> <button type="button" class="close hidden-xs hidden-sm" data-dismiss="modal" aria-label="Close"> <span aria-hidden="true">×</span> </button> </div> <div class="modal-body"> <div class="errors"></div> <p><strong>Which of the following best describes your feedback?</strong></p> <form method="post" style="overflow: hidden"> <div class="form-group"> <div class="radio"><label style="color: #121212;"><input type="radio" name="feedback-type" value="Recommendation"> Recommend</label></div><div class="radio"><label style="color: #121212;"><input type="radio" name="feedback-type" value="Problem"> Report a problem</label></div><div class="radio"><label style="color: #121212;"><input type="radio" name="feedback-type" value="Improvement"> Suggest an improvement</label></div><div class="radio"><label style="color: #121212;"><input type="radio" name="feedback-type" value="Other"> Other</label></div> </div> <hr> <div class="row"> <div class="col-md-6"> <div class="form-group"> <label for="feedback-name">Name</label> <input type="text" class="form-control" name="feedback-name" placeholder="Name" value=" "> </div> </div> <div class="col-md-6"> <div class="form-group"> <label for="feedback-email">Email address</label> <input type="email" class="form-control" name="feedback-email" placeholder="Email" value="@airmail.cc"> </div> </div> </div> <div class="form-group"> <label for="feedback-comments">Comments</label> <textarea class="form-control" name="feedback-comments" style="resize: vertical;"></textarea> </div> <input type="hidden" name="feedback-ticket" value="082b9c9c4ae3624d"> <input type="hidden" name="feedback-url" value="https://studyib.net/biology/page/605/photosynthesis-29"> <input type="hidden" name="feedback-subject" value="5"> <input type="hidden" name="feedback-subject-name" value="Biology"> <div class="pull-left"> </div> </form> </div> <div class="modal-footer"> <button type="button" class="btn btn-primary btn-xs-block feedback-submit mb-xs-3 pull-right"> <i class="fa fa-send"></i> Send </button> <button type="button" class="btn btn-default btn-xs-block m-xs-0 pull-left" data-dismiss="modal"> Close </button> </div> </div> </div></div> </article> <hr class="hidden-md hidden-lg"> <div class="hidden-md hidden-lg mt-xs-3"> <button class="btn btn-default btn-block text-xs-center" data-toggle="modal" data-target="#modal-feedback" style="margin-bottom: 10px"><i class="fa fa-send"></i> Feedback</button> </div> </div> <input type="hidden" id="user-id" value="38342"></div><input id="ticket" type="hidden" value="082b9c9c4ae3624d"><input id="tzoffset" type="hidden" value="new"><input id="fp" class="fp" type="hidden" value=""></div><div id="std-footer"> <div class="wmap"> <div class="layout-wrapper"> <p> <a href="https://www.inthinking.net"> © <span id="footer-year"></span> <em>InThinking</em> <script>document.getElementById("footer-year").innerHTML = new Date().getFullYear();</script> </a> | <a target="_self" href="../../../about.html"> About us </a> | <a target="_self" href="../../../terms-and-conditions.html"> Legal </a> | <a target="_self" href="../../../contact.html"> Contact </a> </p> <p> <a class="social" target="_blank" href="https://twitter.com/#!/inthinker"> <img src="../../../img/social/twitter-square.svg"> Twitter </a> <a class="social" target="_blank" href="https://www.facebook.com/inthinking.net"> <img src="../../../img/social/facebook-square.svg"> Facebook </a> <a class="social" target="_blank" href="https://www.linkedin.com/profile/view?id=139741989"> <img src="../../../img/social/linkedin-square.svg"> LinkedIn </a> </p> </div> </div></div><script src="../../../js/jquery-1.11.3.min.js"></script><script src="../../../js/bootstrap.min.js"></script><script src="../../../js/jquery-fancybox/jquery.fancybox.min.js"></script><script>var pageId = 605;</script><script type="text/javascript" src="../../../js/std-galleries.min.js"></script><script type="text/javascript" src="../../../js/jqueryui/jquery-ui-custom.min.js"></script><script type="text/javascript" src="../../../js/jqueryui/jquery.ui.touch-punch.js"></script><script type="text/javascript" src="../../../js/std-quizzes-helpers.min.js?v=20220406"></script><script type="text/javascript" src="../../../js/std-quizzes.min.js?v=2022041300"></script><script src="../../../ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script><script type="text/javascript" src="../../../js/slick-carousel/slick.min.js"></script><script type="text/javascript" src="../../../js/std-slide-quizzes.min.js?v=20220406"></script> <script> $(document).ready(function() { $('a.scroll-to').click(function(e){ e.preventDefault(); var n = $('#'+$(this).data('target')).offset().top - 70; $('html, body').animate({scrollTop: n},300); }); $('.toc-switcher').click(function(e){ e.preventDefault(); $('.toc > ol').slideToggle('fast'); $(this).find('i:last-child').toggleClass('fa fa-chevron-circle-up').toggleClass('fa fa-chevron-down'); $(this).attr('title', $(this).attr('title') == 'Show table of contents' ? 'Hide table of contents' : 'Show table of contents'); }); }); </script><script type="text/javascript" src="../../../js/jqueryui/jquery-ui.min.js"></script><script type="text/javascript" src="../../../js/jqueryui/jquery.ui.touch-punch.min.js"></script><script src="../../../js/user/page-my-progress.min.js?v=202211221000"></script><script>var sAJAX='/pages/subjects/activity/user-stats-page.php?t=082b9c9c4ae3624d&p=605&s=5&x=29884';var sData='k4iA6GSB03BgPm13Od9RPHpsE3KeSVBAEzP5PHpsE39FIxiA6GSB0bfjSYyBPm1F9YshSYvDkGqrZYKDZ0OlOFNqPFAF7YcHEKvr6GSDPmjoPnyBSnKR74P5GDcSezAFWGcrE0ij6GyDPmjn6GyDEzAF7bKFEYv86GB2Pm1FPFAF7YcrZxP5PBAh6nBhWYvHkKAh7YcHEKAhamQL0xvAZYvrWbaqWHf1E0aj74r4wziv';var loopSecs = 30;var minSecsLog = 60;var lsKey = '5-83605-605';</script><script src="../../../js/subjects/activity/user-stats-page.min.js?v=202205311700"></script><script src="../../../js/subjects/activity/my-favorites.min.js?v=20220610"></script><script src="../../../js/subjects/feedback.min.js?v=202211221000"></script><script>var sessionUpdateSecs = 300;</script><script type="text/javascript" src="../../../js/session-updater.js"></script><script>(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');ga('create', 'UA-98480796-5', 'auto');ga('send', 'pageview');</script><script src="../../../js/devicefp/devicefp.min.js"></script><script src="../../../js/jq-quickfit/jq-quickfit.min.js?v=20220201"></script><script src="../../../js/frontpage-subjects.min.js?v=202211161300"></script><script type="text/javascript" src="../../../js/studyib-jq.min.js?v=202211241300"></script><script type="text/javascript">$(document).ready(function(){ $('#trigger-modal-video-overview').click(function() { if( $('#modal-video-overview .modal-body iframe').attr('src').length == 0 ) { $('#modal-video-overview .modal-body iframe').attr('src', 'https://www.youtube.com/embed/hxxtdiLdTFk?rel=0'); } }); $('#modal-video-overview').on('hidden.bs.modal', function() { $('#modal-video-overview .modal-body iframe').attr('src', ''); }); });</script></body></html>