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into Amino Acids</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19635/cell-respiration.html" title="Cell Respiration.">Cell Respiration.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19636/respiration-experiments.html" title="Respiration experiments.">Respiration experiments.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/15713/photosynthesis-theory.html" title="Photosynthesis Theory">Photosynthesis Theory</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20556/photosynthetic-pigments-.html" title="Photosynthetic pigments ">Photosynthetic pigments </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/15727/photosynthesis-experiments.html" title="Photosynthesis Experiments">Photosynthesis Experiments</a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/16980/genetics-activities-for-learning.html" title="Genetics Activities for Learning">Genetics Activities for Learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17813/chromosomes-genes-alleles.html" title="Chromosomes genes & alleles">Chromosomes genes & alleles</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17822/human-genome-project.html" title="Human Genome Project">Human Genome Project</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17827/base-substitution-mutation.html" title="Base substitution mutation">Base substitution mutation</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17859/chromosomes.html" title="Chromosomes">Chromosomes</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17816/karyograms-and-non-disjunction.html" title="Karyograms and non-disjunction">Karyograms and non-disjunction</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17814/introduction-to-meiosis.html" title="Introduction to Meiosis">Introduction to Meiosis</a></li><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17817/theoretical-genetics-1.html" title="Theoretical Genetics 1">Theoretical Genetics 1</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/23787/stargardt-disease.html" title="Stargardt disease">Stargardt disease</a></li></ul><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17818/theoretical-genetics-2.html" title="Theoretical Genetics 2">Theoretical Genetics 2</a></li><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17819/sex-linked-genes.html" title="Sex Linked Genes">Sex Linked Genes</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17825/is-genetics-an-embarrassment-to-biology-education-.html" title="Is genetics an embarrassment to biology education? ">Is genetics an embarrassment to biology education? </a></li></ul><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17809/hairy-hands-genetics-of-mid-digital-hair.html" title="Hairy Hands - genetics of mid-digital hair">Hairy Hands - genetics of mid-digital hair</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17810/pedigree-chart-phenotype-ratios.html" title="Pedigree Chart & Phenotype Ratios">Pedigree Chart & Phenotype Ratios</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17820/ia-maize-genetics-experiment.html" title="IA Maize Genetics Experiment">IA Maize Genetics Experiment</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17823/genetically-modified-organisms.html" title="Genetically Modified Organisms.">Genetically Modified Organisms.</a></li><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17824/introduction-to-cloning.html" title="Introduction to Cloning.">Introduction to Cloning.</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/33736/cloning-ethics-quiz.html" title="Cloning ethics - quiz">Cloning ethics - quiz</a></li></ul><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17811/therapeutic-cloning-debate-.html" title="Therapeutic Cloning Debate ">Therapeutic Cloning Debate </a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/16981/ecology-activities-for-learning.html" title="Ecology Activities for Learning">Ecology Activities for Learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17905/ecological-terms.html" title="Ecological terms.">Ecological terms.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17906/food-webs.html" title="Food Webs">Food Webs</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17927/mesocosm-lab.html" title="Mesocosm Lab">Mesocosm Lab</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/23435/ecology-mini-investigation.html" title="Ecology mini investigation">Ecology mini investigation</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/33629/ecology-field-trip-at-home.html" title="Ecology field trip - at home">Ecology field trip - at home</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17907/energy-flow.html" title="Energy Flow.">Energy Flow.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17912/carbon-cycle-skills.html" title="Carbon Cycle Skills">Carbon Cycle Skills</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17908/enhanced-greenhouse-effect.html" title="Enhanced Greenhouse Effect.">Enhanced Greenhouse Effect.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17909/climate-change.html" title="Climate Change.">Climate Change.</a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/16985/evolution-activities-for-learning.html" title="Evolution: Activities for Learning">Evolution: Activities for Learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/15988/evolution-introduction.html" title="Evolution introduction">Evolution introduction</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/15990/variation-overproduction.html" title="Variation & overproduction">Variation & overproduction</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/15989/evolution-examples.html" title="Evolution examples">Evolution examples</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19320/classification-binomial-names.html" title="Classification & binomial names">Classification & binomial names</a></li><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/15991/classification-of-plants.html" title="Classification of Plants">Classification of Plants</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19306/plant-classification-quiz.html" title="Plant classification quiz">Plant classification quiz</a></li></ul><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/15993/classification-of-animals.html" title="Classification of Animals">Classification of Animals</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/23751/classification-games.html" title="Classification games">Classification games</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18912/intro-to-cladistics.html" title="Intro to cladistics">Intro to cladistics</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18910/reclassification-of-figworts-using-cladistics.html" title="Reclassification of figworts using cladistics">Reclassification of figworts using cladistics</a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18027/humans-activities-for-learning.html" title="Humans Activities for Learning">Humans Activities for Learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18028/digestion-enzymes-intro-.html" title="Digestion & Enzymes Intro ">Digestion & Enzymes Intro </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18029/ia-lipase-experiment.html" title="IA Lipase Experiment">IA Lipase Experiment</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18033/structure-of-the-digestive-system.html" title="Structure of the digestive system.">Structure of the digestive system.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18030/intestine-structure-function.html" title="Intestine Structure & Function.">Intestine Structure & Function.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18031/blood-and-blood-vessels.html" title="Blood and Blood Vessels">Blood and Blood Vessels</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18032/heart-dissection-diagram.html" title="Heart Dissection & Diagram">Heart Dissection & Diagram</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18026/controlling-heartbeat.html" title="Controlling Heartbeat">Controlling Heartbeat</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18590/blood-clotting-and-heart-disease.html" title="Blood clotting and heart disease.">Blood clotting and heart disease.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18117/antigens-and-antibodies-.html" title="Antigens and antibodies ">Antigens and antibodies </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18180/hiv-and-aids.html" title="HIV and AIDS">HIV and AIDS</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18116/immune-system-.html" title="Immune System ">Immune System </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18115/alveoli-gas-exchange.html" title="Alveoli & gas exchange">Alveoli & gas exchange</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19330/ventilation-lung-disease.html" title="Ventilation & lung disease">Ventilation & lung disease</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18421/nerve-impulses.html" title="Nerve impulses.">Nerve impulses.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18461/synapses.html" title="Synapses">Synapses</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/31311/chemicals-which-affect-synapses.html" title="Chemicals which affect synapses">Chemicals which affect synapses</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19886/hormones-introduction.html" title="Hormones introduction">Hormones introduction</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19894/homeostasis-of-glucose.html" title="Homeostasis of Glucose.">Homeostasis of Glucose.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19907/harvey-and-the-search-for-ova.html" title="Harvey and the search for ova">Harvey and the search for ova</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19908/hormones-and-the-menstrual-cycle.html" title="Hormones and the menstrual cycle">Hormones and the menstrual cycle</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19927/hormones-in-ivf.html" title="Hormones in IVF">Hormones in IVF</a></li></ul></ul><li class=" parent std-toplevel" style="padding-left: 4px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17178/additional-hl.html" title="Additional HL">Additional HL</a></li><ul class="level-1 "><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17917/hl-nucleic-acids-activities-for-learning.html" title="HL Nucleic Acids Activities for Learning">HL Nucleic Acids Activities for Learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17918/dna-structure-extras-for-hl.html" title="DNA structure - Extras for HL">DNA structure - Extras for HL</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/16141/dna-replication-for-hl-students.html" title="DNA Replication for HL Students">DNA Replication for HL Students</a></li><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17920/transcription-extras-for-hl.html" title="Transcription - extras for HL">Transcription - extras for HL</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/37259/extension-concept-hydrolysis-of-atp.html" title="Extension concept - Hydrolysis of ATP">Extension concept - Hydrolysis of ATP</a></li></ul><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18048/translation-ribosomes.html" title="Translation & ribosomes">Translation & ribosomes</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17921/four-levels-of-protein-structure.html" title="Four levels of protein structure">Four levels of protein structure</a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18211/hl-metabolism-activities-for-learning.html" title="HL Metabolism Activities for Learning">HL Metabolism Activities for Learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19840/activation-energy-and-enzyme-pathways.html" title="Activation energy and enzyme pathways">Activation energy and enzyme pathways</a></li><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19850/emergency-room-activity-enzyme-inhibition.html" title="Emergency room activity - enzyme inhibition">Emergency room activity - enzyme inhibition</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19865/toxicology-training-course.html" title="Toxicology training course">Toxicology training course</a></li></ul><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17923/end-product-inhibition-of-enzymes.html" title="End product inhibition of Enzymes.">End product inhibition of Enzymes.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17922/hl-respiration-introduction.html" title="HL Respiration introduction">HL Respiration introduction</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/16207/glycolysis-and-the-krebs-cycle.html" title="Glycolysis and the Krebs Cycle">Glycolysis and the Krebs Cycle</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18214/electron-transport-chain.html" title="Electron transport chain">Electron transport chain</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/16209/chloroplasts-and-photosynthesis.html" title="Chloroplasts and Photosynthesis">Chloroplasts and Photosynthesis</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/16210/light-dependent-reactions.html" title="Light Dependent Reactions">Light Dependent Reactions</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/16211/light-independent-reactions.html" title="Light Independent Reactions">Light Independent Reactions</a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17720/hl-plant-biology-activities-for-learning.html" title="HL Plant Biology - Activities for Learning">HL Plant Biology - Activities for Learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17726/leaf-stomata-transpiration.html" title="Leaf stomata & transpiration">Leaf stomata & transpiration</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17721/vascular-tissues-introduction.html" title="Vascular tissues - introduction">Vascular tissues - introduction</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17723/transport-in-xylem.html" title="Transport in xylem">Transport in xylem</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17727/experiments-on-transpiration.html" title="Experiments on Transpiration.">Experiments on Transpiration.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17724/transpiration-and-xerophytes-.html" title="Transpiration and Xerophytes ">Transpiration and Xerophytes </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17763/phloem-and-translocation.html" title="Phloem and translocation">Phloem and translocation</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17722/meristems-and-growth.html" title="Meristems and Growth.">Meristems and Growth.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17804/hormonal-control-in-plants.html" title="Hormonal control in plants">Hormonal control in plants</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17725/reproduction-in-angiosperms.html" title="Reproduction in angiosperms.">Reproduction in angiosperms.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17808/seeds-flowering-phytochromes.html" title="Seeds, flowering & phytochromes">Seeds, flowering & phytochromes</a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17888/hl-genetics-activities-for-learning.html" title="HL Genetics Activities for Learning">HL Genetics Activities for Learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17889/meiosis.html" title="Meiosis.">Meiosis.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17890/di-hybrid-crosses.html" title="Di-Hybrid Crosses.">Di-Hybrid Crosses.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17892/polygenic-inheritance.html" title="Polygenic Inheritance.">Polygenic Inheritance.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17891/gene-linkage-1.html" title="Gene Linkage 1">Gene Linkage 1</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17894/gene-linkage-2.html" title="Gene Linkage 2">Gene Linkage 2</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17901/gene-pools.html" title="Gene pools">Gene pools</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19670/polyploidy.html" title="Polyploidy">Polyploidy</a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19559/hl-animal-physiology-activities-for-learning.html" title="HL Animal Physiology Activities for Learning">HL Animal Physiology Activities for Learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19560/antibody-production.html" title="Antibody production">Antibody production</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19566/monoclonal-antibodies.html" title="Monoclonal antibodies">Monoclonal antibodies</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19565/vaccination.html" title="Vaccination">Vaccination</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19561/muscles-joints.html" title="Muscles & joints">Muscles & joints</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19564/muscle-structure-function.html" title="Muscle structure & function.">Muscle structure & function.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19681/osmoregulation.html" title="Osmoregulation">Osmoregulation</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19562/kidney-and-nephrons.html" title="Kidney and nephrons.">Kidney and nephrons.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18813/gamete-formation.html" title="Gamete formation">Gamete formation</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/16365/fertilization-blastocyst.html" title="Fertilization & blastocyst">Fertilization & blastocyst</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20080/pregnancy-and-birth.html" title="Pregnancy and birth">Pregnancy and birth</a></li></ul></ul><li class=" parent std-toplevel" style="padding-left: 4px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17193/options-.html" title="Options ">Options </a></li><ul class="level-1 "><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/21490/option-a-neurobiology-activities-for-learning.html" title="Option A - Neurobiology - Activities for learning">Option A - Neurobiology - Activities for learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/21399/nervous-system-formation.html" title="Nervous system formation">Nervous system formation</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/21401/synapses-and-nervous-system-plasticity.html" title="Synapses and nervous system plasticity">Synapses and nervous system plasticity</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/21519/brain-structure-and-function.html" title="Brain structure and function">Brain structure and function</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/21520/the-cerebral-cortex.html" title="The Cerebral cortex">The Cerebral cortex</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/21525/sensory-receptors-and-smell.html" title="Sensory receptors and smell">Sensory receptors and smell</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/21526/the-eye-and-photoreceptors.html" title="The eye and photoreceptors">The eye and photoreceptors</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/33371/reflexes.html" title="Reflexes">Reflexes</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/33372/conditioning-and-imprinting.html" title="Conditioning and imprinting">Conditioning and imprinting</a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/25280/option-b-biotechnology-and-bioinformatics.html" title="Option B - Biotechnology and bioinformatics">Option B - Biotechnology and bioinformatics</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/32571/batch-fermentation-and-continuous-culture.html" title="Batch fermentation and continuous culture">Batch fermentation and continuous culture</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/25411/cryptic-messages-bioinformatics-introduction.html" title="Cryptic messages - bioinformatics introduction">Cryptic messages - bioinformatics introduction</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/25364/orf-activity.html" title="ORF activity">ORF activity</a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22063/option-c-ecology-activities-for-learning.html" title="Option C - Ecology Activities for learning">Option C - Ecology Activities for learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22081/describing-communities.html" title="Describing communities">Describing communities</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22083/limits-and-zones-lab.html" title="Limits and zones lab">Limits and zones lab</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22084/symbiosis-v-competitive-exclusion.html" title="Symbiosis v Competitive exclusion">Symbiosis v Competitive exclusion</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22085/modelling-energy-flow.html" title="Modelling energy flow">Modelling energy flow</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22086/predicting-ecosystems.html" title="Predicting ecosystems">Predicting ecosystems</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22089/modelling-nutrients.html" title="Modelling nutrients">Modelling nutrients</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22088/disturbance-vs-diversity.html" title="Disturbance vs Diversity">Disturbance vs Diversity</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22807/invasive-species.html" title="Invasive species">Invasive species</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22810/biomagnification.html" title="Biomagnification">Biomagnification</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22958/plastic-debris.html" title="Plastic debris">Plastic debris</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/23153/indicator-species-biotic-index.html" title="Indicator species & biotic index">Indicator species & biotic index</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/23154/conservation-methods.html" title="Conservation methods">Conservation methods</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22059/biodiversity-estimations.html" title="Biodiversity estimations">Biodiversity estimations</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22060/lincoln-index-activities.html" title="Lincoln Index activities">Lincoln Index activities</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/27387/population-growth-curves.html" title="Population growth curves">Population growth curves</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/27433/fisheries-and-populations.html" title="Fisheries and populations">Fisheries and populations</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18998/nitrogen-cycle-applications.html" title="Nitrogen cycle - applications">Nitrogen cycle - applications</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/28235/phosphorus-cycle.html" title="Phosphorus cycle">Phosphorus cycle</a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20088/option-d-human-physiology-activities-for-learning.html" title="Option D - Human physiology Activities for learning">Option D - Human physiology Activities for learning</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20215/is-it-so-bad-to-eat-only-pizza.html" title="Is it so bad to eat only pizza?">Is it so bad to eat only pizza?</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20220/appetite-and-malnutrition.html" title="Appetite and malnutrition">Appetite and malnutrition</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20284/exocrine-glands.html" title="Exocrine glands">Exocrine glands</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20300/control-of-digestive-secretions.html" title="Control of digestive secretions">Control of digestive secretions</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20259/a-miracle-cure-for-ulcers.html" title="A miracle cure for ulcers">A miracle cure for ulcers</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20664/liver-structure-function.html" title="Liver structure & function.">Liver structure & function.</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20665/jaundice-liver-function.html" title="Jaundice & liver function">Jaundice & liver function</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20692/cardiac-muscle-myogenic-control.html" title="Cardiac muscle & myogenic control">Cardiac muscle & myogenic control</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20707/cardiology-role-play.html" title="Cardiology Role play">Cardiology Role play</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/24113/epidemiology-framingham-heart-study.html" title="Epidemiology - Framingham heart study">Epidemiology - Framingham heart study</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20706/pituitary-gland-and-hormones.html" title="Pituitary gland and hormones">Pituitary gland and hormones</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20732/oxygen-dissociation-curves.html" title="Oxygen dissociation curves">Oxygen dissociation curves</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20708/carbon-dioxide-and-bohr-shift.html" title="Carbon dioxide and Bohr shift">Carbon dioxide and Bohr shift</a></li></ul></ul><li class=" parent std-toplevel" style="padding-left: 4px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17622/the-investigation.html" title="The Investigation">The Investigation</a></li><ul class="level-1 "><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/21187/individual-investigation-skills-introduction.html" title="Individual investigation - skills introduction">Individual investigation - skills introduction</a></li><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17179/practical-scheme-of-work.html" title="Practical Scheme of Work">Practical Scheme of Work</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/16860/lab-protocols-for-the-biology-ib-guide.html" title="Lab protocols for the Biology IB guide">Lab protocols for the Biology IB guide</a></li></ul><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17623/planning-for-skills-progression.html" title="Planning for skills progression">Planning for skills progression</a></li><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17624/personal-engagement.html" title="Personal Engagement">Personal Engagement</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19063/personal-engagement-personality-quiz.html" title="Personal Engagement - personality quiz">Personal Engagement - personality quiz</a></li></ul><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/34461/three-ways-to-choose-a-topic-for-the-ia.html" title="Three ways to choose a topic for the IA">Three ways to choose a topic for the IA</a></li><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17625/exploration.html" title="Exploration">Exploration</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/23429/focusing-a-research-question.html" title="Focusing a research question">Focusing a research question</a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17626/analysis.html" title="Analysis">Analysis</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/26255/ia-analysis-anova-or-t-test.html" title="IA Analysis - ANOVA or t-test?">IA Analysis - ANOVA or t-test?</a></li></ul><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17627/evaluation.html" title="Evaluation">Evaluation</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17628/communication.html" title="Communication">Communication</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/38973/ia-ideas-during-a-pandemic-2020-21.html" title="IA ideas during a pandemic 2020-21">IA ideas during a pandemic 2020-21</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/30218/ia-avoiding-common-errors.html" title="IA - Avoiding common errors">IA - Avoiding common errors</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/34356/ia-experiments-that-could-be-done-at-home.html" title="IA Experiments that could be done at home">IA Experiments that could be done at home</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/34574/ia-experiment-ideas-inspired-by-youtube.html" title="IA experiment ideas inspired by Youtube">IA experiment ideas inspired by Youtube</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/15992/6-ecological-ideas-for-your-ia.html" title="6 Ecological ideas for your IA">6 Ecological ideas for your IA</a></li><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20852/30-investigation-ideas-for-biology-ia.html" title="30 investigation ideas for Biology IA">30 investigation ideas for Biology IA</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/39689/investigating-strawberries-with-a-glucose-test-meter.html" title="Investigating strawberries with a glucose test meter">Investigating strawberries with a glucose test meter</a></li></ul><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/23240/16-new-experiment-ideas-for-biology-ia.html" title="16 new experiment ideas for Biology IA">16 new experiment ideas for Biology IA</a></li><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/26171/12-investigation-ideas-with-a-biological-twist.html" title="12 Investigation ideas with a biological twist.">12 Investigation ideas with a biological twist.</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/26186/body-temperature-data.html" title="Body temperature data">Body temperature data</a></li></ul><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19329/ia-investigation-marking-sheet.html" title="IA Investigation - marking sheet">IA Investigation - marking sheet</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/21859/marking-rigour-ia-assessment-criteria.html" title="Marking rigour & IA assessment criteria.">Marking rigour & IA assessment criteria.</a></li></ul><li class=" parent std-toplevel" style="padding-left: 4px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18404/quizzes-tests-revision.html" title="Quizzes tests & revision">Quizzes tests & revision</a></li><ul class="level-1 "><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/17665/the-exams.html" title="The Exams">The Exams</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19051/describing-trends-in-ib-graphs.html" title="Describing trends in IB graphs">Describing trends in IB graphs</a></li><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20791/paper-3-section-a-questions.html" title="Paper 3 Section A - questions">Paper 3 Section A - questions</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/26073/graphical-analysis-skills-for-life.html" title="Graphical analysis - skills for life!">Graphical analysis - skills for life!</a></li></ul></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18403/a3-topic-revision-sheets.html" title="A3 topic revision sheets">A3 topic revision sheets</a></li><ul class="level-2 "><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18405/topic-1-cells-revision-activities.html" title="Topic 1 - Cells revision activities">Topic 1 - Cells revision activities</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22372/topic-1-cells-sl-revision-list.html" title="Topic 1 - Cells SL revision list">Topic 1 - Cells SL revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19003/topic-2-molecular-biology-revision-activities.html" title="Topic 2 - Molecular biology revision activities">Topic 2 - Molecular biology revision activities</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22373/topic-2-bio-molecules-sl-revision-list.html" title="Topic 2 - Bio molecules SL revision list">Topic 2 - Bio molecules SL revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/18999/topic-3-genetics-sl-revision-activities.html" title="Topic 3 - Genetics SL revision activities">Topic 3 - Genetics SL revision activities</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22378/topic-3-genetics-sl-revision-list.html" title="Topic 3 - Genetics SL revision list">Topic 3 - Genetics SL revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19480/topic-4-ecology-sl-revision-activities.html" title="Topic 4 - Ecology SL revision activities">Topic 4 - Ecology SL revision activities</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22395/topic-4-ecology-revision-list.html" title="Topic 4 - Ecology revision list">Topic 4 - Ecology revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/19006/topic-5-evolution-sl-revision-activities.html" title="Topic 5 - Evolution SL revision activities">Topic 5 - Evolution SL revision activities</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22474/topic-5-evolution-revision-list.html" title="Topic 5 - Evolution revision list">Topic 5 - Evolution revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20121/topic-6-human-physiology-sl-revision-activities.html" title="Topic 6 - human physiology SL revision activities">Topic 6 - human physiology SL revision activities</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/22396/topic-6-human-physiology-revision-list.html" title="Topic 6 - Human physiology revision list">Topic 6 - Human physiology revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20196/topic-7-nucleic-acids-hl-revision-activities.html" title="Topic 7 - Nucleic acids HL revision activities">Topic 7 - Nucleic acids HL revision activities</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20139/topic-7-nucleic-acids-hl-revision-list.html" title="Topic 7 - Nucleic acids HL revision list">Topic 7 - Nucleic acids HL revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20787/topic-8-metabolism-hl-revision-activities.html" title="Topic 8 - Metabolism HL revision activities">Topic 8 - Metabolism HL revision activities</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20198/topic-8-metabolism-hl-revision-list.html" title="Topic 8 - Metabolism HL revision list">Topic 8 - Metabolism HL revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20122/topic-9-plant-biology-hl-revision-activities.html" title="Topic 9 - Plant biology HL revision activities">Topic 9 - Plant biology HL revision activities</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20773/topic-9-plants-hl-revision-list.html" title="Topic 9 - Plants HL - revision list">Topic 9 - Plants HL - revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20849/topic-10-genetics-hl-revision-activities.html" title="Topic 10 - Genetics HL Revision activities">Topic 10 - Genetics HL Revision activities</a></li><ul class="level-3 "><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="biology/page/20128/topic-10-genetics-hl-revision-list.html" title="Topic 10 - Genetics HL revision list">Topic 10 - Genetics HL revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="std-disabled" href="#" title="Topic 11 - Physiology HL Revision activities">Topic 11 - Physiology HL Revision activities</a></li><ul class="level-3 "><li 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