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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="expanded parent selected"><label style="padding-left: 0px"><i class="fa fa-fw"></i><a href="respiration-28.html">Respiration 2.8</a></label></li><li class=""><label style="padding-left: 0px"><i class="fa fa-fw"></i><a href="../605/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>&nbsp;&nbsp;Feedback</button> </div> </div> <div class="col-md-9" id="main-column"> <h1 class="page_title"> Respiration 2.8 <a href="#" class="mark-page-favorite pull-right" data-pid="604" 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">Respiration 2.8</span></li> <span class="pull-right" style="color: #555" title="Suggested study time: 30 minutes"><i class="fa fa-clock-o"></i> 30&apos;</span> </ol> <article id="main-article"> <style type="text/css">ol.breadcrumb { margin-bottom: 0 }</style><div id="toc-1675505953" 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 2.8 Respiration</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 measuring respiration</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 bread making.</a><ol></ol></li><li><a href="#header-6" class="scroll-to" data-target="header-6"> 2.8 Cell Respiration Quiz 1/1 </a></li></ol><li><a href="#header-7" class="scroll-to" data-target="header-7">Drag and drop activities</a></li></div><div class="intro-card" readonly="false"><img alt="" src="../../images/02_molecules/respiration.png" style="width: 154px; height: 100px; float: left;">Respiration is one of the seven characteristics of all living things and it is essential for life. This topic covers the basics of aerobic and anaerobic respiration. It is important to know what the role of ATP is in cells and also to have experience of using a respirometer to measure the rate of respiration.</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 2.8 Respiration using these flashcards.</p> <p><iframe frameborder="0" height="420" scrolling="no" src="https://quizlet.com/52147387/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.&nbsp;<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-103" class="dynamic-gallery carousel slide" data-id="103"><div class="carousel-inner" role="listbox"><div class="item active"><a class="fancy" href="../../../std-galleries/5-103/img0x2.jpg" data-fancybox="gallery-103" title="" data-caption=""><img alt="" src="../../../std-galleries/5-103/img0x2.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-103/img1.jpg" data-fancybox="gallery-103" title="" data-caption=""><img alt="" src="../../../std-galleries/5-103/img1.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-103/img2.jpg" data-fancybox="gallery-103" title="" data-caption=""><img alt="" src="../../../std-galleries/5-103/img2.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-103/img3.jpg" data-fancybox="gallery-103" title="" data-caption=""><img alt="" src="../../../std-galleries/5-103/img3.jpg"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-103/img4.jpg" data-fancybox="gallery-103" title="" data-caption=""><img alt="" src="../../../std-galleries/5-103/img4.jpg"></a></div></div><a class="left carousel-control" href="#carousel-103" role="button" data-slide="prev"><i class="fa fa-fw fa-chevron-left"></i></a><a class="right carousel-control" href="#carousel-103" 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/5-103/img0x2-thumb128.jpg"><li><li data-index="1"><img title="Click to view" src="../../../std-galleries/5-103/img1-thumb128.jpg"><li><li data-index="2"><img title="Click to view" src="../../../std-galleries/5-103/img2-thumb128.jpg"><li><li data-index="3"><img title="Click to view" src="../../../std-galleries/5-103/img3-thumb128.jpg"><li><li data-index="4"><img title="Click to view" src="../../../std-galleries/5-103/img4-thumb128.jpg"><li></li></ol> </div> </div> <div class="panel-footer"> <div> <p>These slides summarise the essential understanding and skills in this topic.&nbsp;<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 2.8 Respiration<small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505953" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h3> <ul> <li class="liWithoutP">Cell respiration definition,&quot;the controlled release of energy from organic compounds to produce ATP&quot;</li> <li class="liWithoutP">ATP produced is a source of energy ready for immediate use in the cell.</li> <li class="liWithoutP">Anaerobic cell respiration gives a small yield of ATP from glucose compared to aerobic respiration whose yield is large.</li> <li class="liWithoutP">Aerobic cell respiration also requires oxygen.</li> <li class="liWithoutP">Substrates (e.g. glucose) and final waste products (e.g. water, CO2, lactate, ethanol) should be known.</li> <li>Anaerobic cell respiration in yeasts is used to produce ethanol and carbon dioxide in baking.</li> <li>In the human body anaerobic respiration is used to maximise the power of muscle contractions &amp; produces lactate.</li> <li>Know how to use simple respirometers to measure the rate of respiration. <ul> <li>to know that an alkali is used to absorb CO<sub>2 </sub>produced in respirometers, so that reductions in gas volume are due to oxygen use.</li> <li>To keep the temperature constant, so that gas volumes don&#39;t change through expansion / contraction of gas.</li> </ul> </li> </ul> <hr class="hidden-separator"> <h3 id="header-2">Mindmaps<small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505953" 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 2.8.<br> Test if you can draw something like these concept maps from memory.</p> <div id="carousel-102" class="dynamic-gallery carousel slide" data-id="102"><div class="carousel-inner" role="listbox"><div class="item active"><a class="fancy" href="../../../std-galleries/5-102/28respirationspiderlist.png" data-fancybox="gallery-102" title="" data-caption=""><img alt="" src="../../../std-galleries/5-102/28respirationspiderlist.png"></a></div><div class="item "><a class="fancy" href="../../../std-galleries/5-102/28respirationspider.png" data-fancybox="gallery-102" title="" data-caption=""><img alt="" src="../../../std-galleries/5-102/28respirationspider.png"></a></div></div><a class="left carousel-control" href="#carousel-102" role="button" data-slide="prev"><i class="fa fa-fw fa-chevron-left"></i></a><a class="right carousel-control" href="#carousel-102" 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/5-102/28respirationspiderlist-thumb128.jpg"><li><li data-index="1"><img title="Click to view" src="../../../std-galleries/5-102/28respirationspider-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 measuring respiration<small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505953" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h3> <p>Understanding measurements of respiration from experiments with respirometers 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 graph shows the results of an experiment with germinating seeds.</p> <p><img alt="" height="309" src="../../images/02_molecules/respirometer-expt-graphs.jpg" width="682"></p> <p><strong>Explain how the respirometer apparatus is used to measure the rate of respiration in germinating seeds. [2]</strong></p> <p><strong>....................................................................................... ............................................................................ </strong></p> <p><strong>....................................................................................... ............................................................................ </strong></p> <p><strong>Calculate the rate of respiration in seeds at 30&deg;C, in cm per minute. [2]</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"> <div class="yellowBg"> <h3 id="header-4">Model answer<small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505953" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h3> <p><strong>Explain how the respirometer apparatus is used to measure the rate of respiration in germinating seeds. [2]</strong><br> <em>(Remember to link structure to function in each point of your answers in &quot;Explain&quot; questions).</em></p> <p><span style="color:#FF0000;"><em>The seeds produce carbon dioxide when doing respiration and use up oxygen gas.</em></span></p> <p><span style="color:#FF0000;"><em>The KOH (potassium hydroxide solution) absorbs carbon dioxide from the air in the tube.</em></span></p> <p><span style="color:#FF0000;"><em>The liquid in the U-tube moves towards the seeds as the volume of gas in the tube reduces.</em></span></p> <p><strong>Calculate the rate of respiration in seeds at 30&deg;C, in cm per minute. [2]</strong></p> <p><span style="color:#FF0000;">Respirometer bubble moves 0.31cm in 30 minutes.<br> The rate of respiration can be calculated as 0.31/30 cm per minute = 0.01 cm/minute<br> (using the readings available and respecting the uncertainty of +/- 0.01cm)</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 about respiration and bread making click on the + symbol to open it.</p> </div> </div> <div class="panel-body"> <div> <h3 id="header-5">Exam style question about bread making.<small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505953" title="Back to table of contents"><i class="fa fa-chevron-circle-up gray"></i></a></small></h3> <p>The rising of dough in bread making is an example of anaerobic respiration.</p> <p><span calibri="" style="font-size:11.0pt;line-height:107%; font-family:">This question requires knowledge of yeast respiration in bread production.</span></p> <div class="yellowBg"> <p><b><span calibri="" style="font-size:11.0pt;line-height:107%; font-family:">Outline the role of yeast in the production of bread. (3 marks</span></b>)</p> <p>Answer the question below on a piece of paper, then check your answer with the model answer below.</p> <hr> <hr> <hr> <p><em>Examiner&#39;s hint: &quot;Outline&quot; means give a brief account, including the most important points.</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"> <p>Model answer</p> <div class="yellowBg"> <p><strong>Outline the role of yeast in the production of bread. (3 marks</strong>)</p> <ul> <li><span style="color:#FF0000;">Yeast respires sugars present in the bread dough anaerobically.</span></li> <li><span style="color:#FF0000;">Producing carbon dioxide. </span></li> <li><span style="color:#FF0000;">Which causes the dough to rise.</span></li> <li><span style="color:#FF0000;">It also manufactures ethanol as a waste product.</span></li> <li><span style="color:#FF0000;">During baking, the carbon dioxide trapped in the dough expands and the bread rises, the alcohol evaporates.</span></li> </ul> </div> </section> </div> </div> <div class="panel-footer"> <div> <p>text</p> </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="#1068a91c"><i class="fa fa-play"></i> START QUIZ!</a><div class="modal fade modal-slide-quiz" id="1068a91c"> <div class="modal-dialog" style="width: 95vw; max-width: 960px"> <div class="modal-content"> <div class="modal-header slide-quiz-title"> <h4 id="header-6"> 2.8 Cell Respiration 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-1675505953" 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="5-227-604" style="opacity: 0"> <div class="exercise shadow-bottom"><div class="q-question"><p>Which of the following is the best definition of &#39;cell respiration&#39;?</p></div><div class="q-answer"><p><label class="radio"><input type="radio"> The breakdown of glucose into pyruvate in the cell.</label></p><p><label class="radio"><input type="radio"> The movement of air into and out of the lungs</label></p><p><label class="radio"><input type="radio"> The breakdown of glucose into carbon dioxide and water</label></p><p><label class="radio"><input class="c" type="radio"> The controlled release of energy from organic compounds to produce ATP</label></p></div><div class="q-explanation"><p>The best answer is the controlled release of energy etc. because it also includes ATP and it does not limit the process to glucose.</p><p>Ventilation of the lungs / breathing is not &#39;&#39;cell respiration&quot;, but you knew that didn&#39;t you?</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>How much ATP is produced in anaerobic respiration compared to aerobic respiration?</p></div><div class="q-answer"><p><label class="radio"><input type="radio"> Aerobic respiration produces much less ATP than anaerobic respiration.</label></p><p><label class="radio"><input type="radio"> Aerobic respiration produces double the ATP of anaerobic respiration.</label></p><p><label class="radio"><input class="c" type="radio"> Anaerobic respiration produces much less ATP than aerobic respiration.</label></p><p><label class="radio"><input type="radio"> Both anaerobic and aerobic respiration produce the same amount of ATP.</label></p></div><div class="q-explanation"><p>The high yield of ATP is one of the key features of aerobic respiration.</p><p>Aerobic respiration produces more than 10 times the ATP of anaerobic respiration.</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>Aerobic and anaerobic bacteria can be identified by growing them in a liquid nutrient medium.</p><p><img alt="" src="../../images/02_molecules/bacteria_respn_expt.png" style="width: 200px; height: 200px;"></p><p>In these diagrams of three test tubes there are:</p><ul><li>bacteria which need oxygen to survive ,</li><li>bacteria which can only survive in the absence of oxygen and</li><li>bacteria which can survive with or without oxygen.</li></ul><p>Which of the following is the best explanation why the bacteria are more dense near the surface of test tubes 1 &amp; 3?</p><hr class="hidden"></div><div class="q-answer"><p><label class="radio"><input type="radio"> There are more nutrients floating at the surface of the solutions.</label></p><p><label class="radio"><input type="radio"> The results seem unreliable because the bacteria grow at the top and the bottom.</label></p><p><label class="radio"><input type="radio"> Tubes 1 &amp; 3 have bacteria which need oxygen to survive.</label></p><p><label class="radio"><input class="c" type="radio"> Aerobic respiration produces a lot more ATP than anaerobic respiration. </label></p></div><div class="q-explanation">Aerobic respiration produces lots more ATP than anaerobic respiration so bacteria with access to oxygen will have more ATP (energy) and be able to grow more quickly.</div><div class="q-explanation">In tube 2 the bacteria cannot survive in the presence of oxygen and so cannot benefit from aerobic respiration. Those in 1 &amp; 3 can use oxygen.</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>In an experiment to measure the rate of respiration shown below, some peas were placed into a test tube</p><p><img alt="" src="../../images/02_molecules/respirometer.png" style="width: 400px; height: 236px;"></p><p>What is the role of potassium hydroxide?</p></div><div class="q-answer"><p><label class="radio"><input type="radio"> To keep the peas wet during the experiment.</label></p><p><label class="radio"><input class="c" type="radio"> To absorb carbon dioxide</label></p><p><label class="radio"><input type="radio"> To increase the pH</label></p><p><label class="radio"><input type="radio"> To provide essential minerals</label></p></div><div class="q-explanation"><p>Carbon dioxide can be absorbed by an alkali. Sodium hydroxide, or potassium hydroxide are often used.</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>In this experiment to measure the rate of respiration, shown below, peas were left in the equipment for two hours. The temperature was controlled, and kept at 25&deg;C.</p><p><img alt="" src="../../images/02_molecules/respirometer.png" style="width: 400px; height: 236px;"></p><p>Which direction would you expect to see the bubble in the capillary tube to move during the experiment?</p></div><div class="q-answer"><p><label class="radio"><input class="c" type="radio"> The bubble in the capillary tube will move to the left.</label></p><p><label class="radio"><input type="radio"> The bubble in the capillary tube will not move.</label></p><p><label class="radio"><input type="radio"> The bubble in the capillary tube will move to the right (away from the peas).</label></p><p><label class="radio"><input type="radio"> The bubble in the capillary tube will get longer.</label></p></div><div class="q-explanation"><p>Respiration will be happening in the germinating peas and they will be respiring at a fast enough rate to move the bubble in the capillary tube.</p><p>The absorbent cotton will absorb the carbon dioxide produced by respiration and oxygen will be absorbed by the peas. Tis causes the bubble to move towards the peas.</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>Muscle contraction require a lot of energy during strenuous exercise.</p><p>The graph below shows blood lactate levels at increasing power outputs while cycling. </p><p><img alt="" src="../../images/01_cells/lactate_graph.png" style="width: 400px; height: 308px;"></p><p>Sometime the effort uses more energy than can be provided by aerobic respiration alone. </p><p>Which of the following statements best describes what is happening at the points A to d on the graph?</p></div><div class="q-answer"><p><label class="radio"><input type="radio"> They all do mostly anaerobic respiration and a little aerobic respiration.</label></p><p><label class="radio"><input type="radio"> A mostly aerobic respiration, B, C and D less and less aerobic respiration.</label></p><p><label class="radio"><input class="c" type="radio"> A and B mostly aerobic respiration. C &amp; D both aerobic and anaerobic respiration.</label></p><p><label class="radio"><input type="radio"> A &amp; B mostly aerobic respiration. C &amp; D mostly anaerobic respiration..</label></p></div><div class="q-explanation"><p>Muscle cells will use anaerobic and aerobic respiration at the same time when undergoing strenuous exercise. They do aerobic respiration at lower power outputs and increasing amounts of anaerobic respiration as the output increases.</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>In humans what is the purpose of making lactate from pyruvate during anaerobic respiration?</p></div><div class="q-answer"><p><label class="radio"><input type="radio"> To produce a small yield of ATP.</label></p><p><label class="radio"><input class="c" type="radio"> To reduce the amount of pyruvate so that glycolysis can continue.</label></p><p><label class="radio"><input type="radio"> To convert glucose to glycogen.</label></p><p><label class="radio"><input type="radio"> To make the muscles ache and slow down the effort.</label></p></div><div class="q-explanation"><p>Anaerobic respiration in human produces lactate (sometimes called lactic acid)</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>&nbsp;&nbsp;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&nbsp;&nbsp;<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-7">Drag and drop activities<small class="toc-back-button"><a href="#" class="scroll-to" data-target="toc-1675505953" 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="5-844-604"><p>Test your construction of biological knowledge using the drag and drop questions below.</p><p><strong>Contrasting aerobic and anaerobic respiration</strong><o:p></o:p></p><p><o:p></o:p></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">large</span> <span class="q-text-draggable draggable" draggable="true">cytoplasm</span> <span class="q-text-draggable draggable" draggable="true">ethanol</span> <span class="q-text-draggable draggable" draggable="true">water</span> <span class="q-text-draggable draggable" draggable="true">small amount </span> <span class="q-text-draggable draggable" draggable="true">Aerobic</span> <span class="q-text-draggable draggable" draggable="true">mitochondrion</span> <span class="q-text-draggable draggable" draggable="true">partially</span> <span class="q-text-draggable draggable" draggable="true">carbon dioxide</span> <span class="q-text-draggable draggable" draggable="true">oxygen</span> <span class="q-text-draggable draggable" draggable="true">completely</span> </p></div><div class="q-answer"><p> <input type="text" style="height: auto;" data-c="Aerobic"> <span class="review"></span> respiration begins in the cytoplasm and is completed in the <input type="text" style="height: auto;" data-c="mitochondrion"> <span class="review"></span> . It uses oxygen, <input type="text" style="height: auto;" data-c="completely"> <span class="review"></span> breaks down glucose into <input type="text" style="height: auto;" data-c="carbon dioxide"> <span class="review"></span> and <input type="text" style="height: auto;" data-c="water"> <span class="review"></span> and produces a <input type="text" style="height: auto;" data-c="large"> <span class="review"></span> amount of ATP energy.</p><p>Anaerobic respiration occurs in the <input type="text" style="height: auto;" data-c="cytoplasm"> <span class="review"></span> . It does not use <input type="text" style="height: auto;" data-c="oxygen"> <span class="review"></span> and <input type="text" style="height: auto;" data-c="partially"> <span class="review"></span> breaks down glucose into <input type="text" style="height: auto;" data-c="ethanol"> <span class="review"></span> or lactic acid and produces a <input type="text" style="height: auto;" data-c="small amount "> <span class="review"></span> of ATP energy.</p></div><div class="q-explanation"><p><em>Examiner hint: In any compare or compare and contrast response you should use a point of comparison per sentence e.g. aerobic respiration uses oxygen; anaerobic does not. The above paragraphs are written for the drag and drop activity.</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><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>This is a little bit of fun. You can choose your favourite game but I prefer the word shoot! <a href="http://www.classtools.net/wordshooter/201903_BiEf4W" target="_blank">Respiration word shoot game</a></p> <ul> </ul> <p align="center"><iframe frameborder="0" height="250" scrolling="no" src="//www.classtools.net/widg/201903_BiEf4W" width="570"><br> </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="604"> <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>Respiration 2.8</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">&times;</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/604/respiration-28"> <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>&nbsp;&nbsp;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"> &copy; 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