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You must choose the correct word to complete the paragraphs. The paragraphs illustrate how similar sub-topics link together. </p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">4 February 2023</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/00_random-images/free_access.png" class="thumb thumb-cover"></div><div class="media-body"><h4><a href="page/3012/free-access-weekend-.html">Free Access Weekend! <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">If you have a Basic subscription we are opening free access to all the site pages on Saturday 4th and Sunday 5th February! You will be able to see all the resources, in all the topics. There is lots to help you with your Biology revision / self-study. </p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">1 February 2023</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/02_molecules/maltose.png" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/2896/paper-2-style-exam-questions.html" class="text-normal" style="font-weight: 400 !important;">Paper 2 style Exam questions</a></h5><h4><a href="page/2996/paper-2-questions-from-topic-2-molecules.html">Paper 2 questions from Topic 2 Molecules</a></h4><p class="body font-xs">This page contains Paper 2 style questions that need structured longer written answers. A calculator can be used for any calculations. Every question comes with a few notes about the topic and a model answer.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">1 February 2023</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/00_random-images/cell_corrections2-1.jpg" class="thumb thumb-cover"></div><div class="media-body"><h4><a href="page/2896/paper-2-style-exam-questions.html">Paper 2 style Exam questions <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">These pages contain longer written answers to questions found in paper two and three. Paper 2 style questions have several styles. You are allowed to use a calculator. They test detailed subject knowledge, application of knowledge and the use...</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">24 January 2023</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/01_cells/paramecium_endocytosis.png" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/2896/paper-2-style-exam-questions.html" class="text-normal" style="font-weight: 400 !important;">Paper 2 style Exam questions</a></h5><h4><a href="page/2717/paper-2-questions-topic-1-cells.html">Paper 2 questions Topic 1 Cells <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">This page contains Paper 2 style questions that need structured longer written answers. A calculator can be used for any calculations. Every question comes with a few notes about the topic and a model answer.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">24 January 2023</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/01_cells/mitosis(1).png" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/462/01-cell-biology.html" class="text-normal" style="font-weight: 400 !important;">01 Cell biology</a></h5><h4><a href="page/609/cell-division-16.html">Cell division 1.6 <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">The control of cell division is just as essential for the survival of multicellular organisms as it is for the reproduction of single celled organisms. This topic covers the movement of chromosomes in the division of eukaryotic cells by mitosis.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">24 January 2023</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/01_cells/cells_graphic.png" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/462/01-cell-biology.html" class="text-normal" style="font-weight: 400 !important;">01 Cell biology</a></h5><h4><a href="page/608/the-origin-of-cells-15.html">The origin of cells 1.5 <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">Life has evolved from the first cells to all the cells we find in the huge diversity of today's organisms. This topic covers the origins of cells and the cell theory proposed by Pasteur and Schwaan when spontaneous generation of cells was believed.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">22 January 2023</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/01_cells/membrane-protein.jpeg" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/462/01-cell-biology.html" class="text-normal" style="font-weight: 400 !important;">01 Cell biology</a></h5><h4><a href="page/575/membrane-transport-14-.html">Membrane transport 1.4 <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">The membrane controls what enters and leaves the cell. This includes using diffusion and osmosis. Sometimes the membrane uses integral proteins as channels and pumps, sometimes the membrane surrounds something which needs moving into or out of the cell.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">22 January 2023</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/06_humans/heart_100x100.png" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/2876/paper-1-style-exam-questions.html" class="text-normal" style="font-weight: 400 !important;">Paper 1 style Exam questions</a></h5><h4><a href="page/2886/topic-6-human-physiology-paper-1-questions.html">Topic 6 Human Physiology Paper 1 questions</a></h4><p class="body font-xs">This page contains multiple choice questions in the style of Paper 1 of the Biology exams. They test the breadth of your knowledge of the understandings and skills about Human Physiology.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">9 January 2023</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/00_random-images/better_answer.png" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/2896/paper-2-style-exam-questions.html" class="text-normal" style="font-weight: 400 !important;">Paper 2 style Exam questions</a></h5><h4><a href="page/2898/paper-2-questions-topic-5-evolution.html">Paper 2 questions Topic 5 Evolution</a></h4><p class="body font-xs">This page contains Paper 2 style questions that need structured longer written answers. A calculator can be used for any calculations. Every question comes with a few notes about the topic and a model answer.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">14 December 2022</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/05_evolution/cladogram.png" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/467/05-evolution-.html" class="text-normal" style="font-weight: 400 !important;">05 Evolution </a></h5><h4><a href="page/802/cladistics-54.html">Cladistics 5.4</a></h4><p class="body font-xs">Cladistics is the study of the family relationships between different classification groups. A clade is a group containing all the descendants of an ancestor species. Understanding the evidence used to build cladograms is also required.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">14 December 2022</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/05_evolution/classification_butterflies-1.jpg" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/467/05-evolution-.html" class="text-normal" style="font-weight: 400 !important;">05 Evolution </a></h5><h4><a href="page/801/classification-of-biodiversity-53-.html">Classification of biodiversity 5.3 </a></h4><p class="body font-xs">Classification helps biologists wherever they are to group organisms into species sharing similar characteristics and share their ideas with others. A basic understanding of the main grouping and their basic features is covered in this topic.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">14 December 2022</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/05_evolution/red_bird_unsplash-1.png" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/467/05-evolution-.html" class="text-normal" style="font-weight: 400 !important;">05 Evolution </a></h5><h4><a href="page/799/evidence-for-evolution-51-.html">Evidence for evolution 5.1 <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">There are different types of evidence which support the theory of evolution, from fossils to selective breeding. This topic covers a range of evidence and some of the concepts related to inheritance, natural selection and evolution. </p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">14 December 2022</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/01_cells/membrane_transport_modelsmall.jpg" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/2876/paper-1-style-exam-questions.html" class="text-normal" style="font-weight: 400 !important;">Paper 1 style Exam questions</a></h5><h4><a href="page/2875/topic-1-cell-biology-paper-1-questions.html">Topic 1 Cell Biology Paper 1 questions <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">This page contains multiple choice questions in the style of Paper 1 of the Biology exams. They test the breadth of your knowledge of the understandings and skills about cell biology.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">18 November 2022</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/01_cells/acetabularia_-wikimedia-24-nov-2012-1.jpg" class="thumb thumb-cover"></div><div class="media-body"><h4><a href="page/462/01-cell-biology.html">01 Cell biology <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">This is an introduction to the Cell Biology topic. This page lists the understandings and skills expected for topic one. Helpful for revision.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">18 November 2022</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/01_cells/acetabularia.png" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/462/01-cell-biology.html" class="text-normal" style="font-weight: 400 !important;">01 Cell biology</a></h5><h4><a href="page/486/introduction-to-cells-11.html">Introduction to cells 1.1 <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">Cell theory states that all organisms are made of cells yet the structure of these cells is variable. While this is true in most cases there are some notable exceptions, like skeletal muscle.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">15 November 2022</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/09_plants/ladybug_flower.jpg" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/2876/paper-1-style-exam-questions.html" class="text-normal" style="font-weight: 400 !important;">Paper 1 style Exam questions</a></h5><h4><a href="page/2889/topic-9-plant-biology-hl-paper-1-questions.html">Topic 9 Plant biology HL Paper 1 questions</a></h4><p class="body font-xs">This page contains multiple choice questions in the style of Paper 1 of the Biology exams. They test the breadth of your knowledge of the understandings and skills about Plant biology.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">15 November 2022</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/11_animalphysiol/muscles-1.jpg" class="thumb thumb-cover"></div><div class="media-body"><h4><a href="page/473/11-animal-physiology-ahl.html">11 Animal physiology AHL <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">This is an introduction to the HL animal physiology topic. It lists understandings and skills expected for Topic 11 including antibody production by lymphocytes, vaccines, monoclonal antibodies, muscle fibres, actin and myosin, etc.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">15 November 2022</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/11_animalphysiol/kidneyqn.jpg" class="thumb thumb-cover"></div><div class="media-body"><h5 class="red"><a href="page/2876/paper-1-style-exam-questions.html" class="text-normal" style="font-weight: 400 !important;">Paper 1 style Exam questions</a></h5><h4><a href="page/2891/topic-11-animal-physiology-hl-paper-1-questions.html">Topic 11 Animal physiology HL Paper 1 questions</a></h4><p class="body font-xs">This page contains multiple choice questions in the style of Paper 1 of the Biology exams. They test the breadth of your knowledge of the understandings and skills about HL animal physiology.</p><div class="media-date" style="padding-top: 15px; text-align: right;"><span class="text-normal gray">15 November 2022</span></div></div></li><li class="resource-item"><div class="img-container"><img src="images/10_geneticshl/crossing-over-1.png" class="thumb thumb-cover"></div><div class="media-body"><h4><a href="page/472/10-genetics-ahl.html">10 Genetics AHL <span><small class="text-danger text-normal">Free</small></span></a></h4><p class="body font-xs">An introduction to the genetics topic. This page lists the understandings and skills expected for topic ten. Helpful for revision. 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