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">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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../20080/pregnancy-and-birth.html" title="Pregnancy and birth">Pregnancy and birth</a></li></ul></ul><li class="ancestor parent std-toplevel" style="padding-left: 4px"><i class="expander fa fa-caret-right fa-rotate-90"></i><a class="" href="../17193/options-.html" title="Options ">Options </a></li><ul class="level-1 expanded"><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../25364/orf-activity.html" title="ORF activity">ORF activity</a></li></ul><li class="ancestor parent" style="padding-left: 14px"><i class="expander fa fa-caret-right fa-rotate-90"></i><a class="" href="../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 expanded"><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../18998/nitrogen-cycle-applications.html" title="Nitrogen cycle - applications">Nitrogen cycle - applications</a></li><li class="current" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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="../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 class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="../20115/topic-11-animal-physiology-revision-list.html" title="Topic 11 - Animal physiology revision list">Topic 11 - Animal physiology revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="../23821/option-a-neurobiology-revision-activities.html" title="Option A - Neurobiology - Revision activities">Option A - Neurobiology - 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="../23822/option-a-neurobiology-sl-revision-list.html" title="Option A - Neurobiology SL Revision list">Option A - Neurobiology SL Revision list</a></li><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="../23831/option-a-neurobiology-hl-revision-list.html" title="Option A - Neurobiology HL Revision list">Option A - Neurobiology HL Revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="../19001/option-c-ecology-revision-activities.html" title="Option C - Ecology revision activities">Option C - Ecology 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="../27865/option-c-ecology-sl-revision-list-.html" title="Option C - Ecology SL revision list ">Option C - Ecology SL revision list </a></li><li class="" style="padding-left: 42px"><i class="expander fa fa-caret-right "></i><a class="" href="../27863/option-c-ecology-hl-revision-list.html" title="Option C - Ecology HL revision list">Option C - Ecology HL revision list</a></li></ul><li class=" parent" style="padding-left: 28px"><i class="expander fa 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style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a class="" href="../17664/key-biological-terms-by-topic.html" title="Key biological terms - by topic">Key biological terms - by topic</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="../17670/key-terms-cells-topic.html" title="Key terms - Cells topic">Key terms - Cells topic</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="../17671/key-terms-molecular-biology-topic.html" title="Key terms - Molecular biology topic">Key terms - Molecular biology topic</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" href="../18209/key-terms-genetics-sl-topic.html" title="Key terms - Genetics SL topic">Key terms - Genetics SL topic</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a class="" 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<h1 class="section-title">Phosphorus cycle</h1>
<ul class="breadcrumb"><li><a title="Home" href="../../../biology.html"><i class="fa fa-home"></i></a><span class="divider">/</span></li><li><span class="gray">Options </span><span class="divider">/</span></li><li><span class="gray">Option C - Ecology Activities for learning</span><span class="divider">/</span></li><li><span class="active">Phosphorus cycle</span></li></ul>
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<img alt="" src="../../../ib/biology/images/flickr_cc_commercial_ok/options/c/phosphorus_bio_cycle.png" style="float: left; width: 110px; height: 78px;">Phosphorus is an important element in cells, it is vital for the formation of plasma membrane, DNA and ATP. In agriculture, phosphorus is added to the soil using fertilizer, to increase agricultural production. This activity is covers the understandings of the phosphorus cycle. There is a short introductory exercise followed by an in-depth research activity and a tricky Ib style 'Discuss' question.<hr class="hidden"><div class="greyBg"><h3>Lesson Description</h3><div class="blueBg"><h3>Guiding Question</h3><p>Phosphorus is required to make all the molecules shown in the diagram. Can you identify each of the molecules?</p><p><img alt="" src="../../../ib/biology/images/flickr_cc_commercial_ok/options/c/phosphate_molecules.jpeg" style="width: 700px; height: 157px;"></p></div><h3>Activity 1 - Introduction to the phorphorus cycle</h3><p>Look at the infographic below about the Phosphorus cycle. Then answer the questions below.</p><p style="text-align: center; "><img alt="" src="../../../ib/biology/images/flickr_cc_commercial_ok/options/c/phosphorus_cycle.jpg" style="width: 700px; height: 688px;"></p><p style="text-align: center; "></p><p>Answer the following questions</p><div class="blueBg"><p>Questions</p><ol><li>Which processes add phosphorus to the soil?<br><br>............................................................................... .........................................................................................</li><li>Describe two methods by which phosporus leaves the soil.<br><br>............................................................................... .........................................................................................</li><li>How do plants take phosphorus from the soil?<br><br>............................................................................... .........................................................................................</li><li>Name three molecules in living cells which require phosphorus?<br><br>............................................................................... .........................................................................................</li><li>Where do we get phosphorus from to make fertilizer<br><br>............................................................................... .........................................................................................</li></ol></div><hr class="hidden"><h3>Activity 2 - A Global Phosphorus crisis</h3><p>Man-made phosphorus pollution is reaching dangerously high levels in freshwater basins around the world. The ever increasing use of phosphate is also causing some to predict a global food crisis in the near future. What are the issues, and are there solutions?</p><p>Use the <a href="/media/ib/biology/files/activity%20worksheets/options/opc/phosphorus_activity_worksheet2.pdf" target="_blank" title="Worksheets"><img class="ico" src="../../../img/icons/exercise.png"> Phosphorus issues and solutions worksheet</a> shown below to familiarise yourselvesd with the problem.</p><h4><iframe frameborder="0" height="460" scrolling="yes" src="/media/ib/biology/files/activity%20worksheets/options/opc/phosphorus_activity_worksheet2.pdf" width="100%"></iframe></h4><hr class="hidden"><h3>Activity 3 - A Canadian professor explains</h3><p>Watch this short presentation (14 minutes) about the potential crisis in agriculture caused by problems in the supply of phosphorus for the manufacture of fertilizers and an ingenious natural solution using Mychorrizae. A fungus which is known to grow in symbiosis with plant roots and which greatly increases a plants uptake of phosphates from the soil.</p><p><a href="Browse server to select file" target="_blank" title="Videos"><img class="ico" src="../../../img/icons/video.png"><span class="anchor" id="video-1" name="video-1"> </span> Phosphate the unknown crisis in agriculture</a></p><p style="text-align: center;"><iframe allowfullscreen="" frameborder="0" height="180" src="//www.youtube.com/embed/gL-iLzh0SqI?rel=0" width="320"></iframe></p><div class="blueBg"><p>After watching this video record your ideas about the problems of phosphate in agriculture using the following format.</p><ul><li><div align="left">First list three things you <strong>think</strong> you know about this topic?<br><br>......................................................................................<br><br>......................................................................................<br><br>......................................................................................<br> </div></li><li><div align="left">Then add two or three questions which you still you have?<br><br>......................................................................................<br><br>......................................................................................</div></li></ul></div></div><div class="pinkBg"><h3>Teacher's notes</h3><p>This lesson explores some of the issues which surround the phosphorus cycle.</p><p>At a first glance the idea seems simple but understanding the issues requires a clear knowledge of the molecules which contain phosphorus in the cells of living organisms, and a good grasp of chemistry as well as an understanding of some basic geology. It is an opportunity to link together ideas from the Ecology topic and the option, and conparisons could be made to the Nitrogen cycle or the Carbon cycle, both of which have a gaseous component which disperses in the atmosphere. This is ani interesting point alone.</p><p>Activity 1 is a simple introduction the the basic ideas about where phosphorus is found and how it moves from place to place. This could be a class actvity or an individual note making preparation activity for the lesson.</p><p>Activity 2 is a more detailed look at some of the concepts and some of the problems which humans have created. It is a guided research activity, with a "Discuss" question to conclude the processes.</p><p>An interesting way to run activity two might be to get students into groups of six and ask each student to become an expert in just one of the articles. They could read the short article and then do some research, and perhaps even a short presentation.</p><p>Activity 3 is designed as an extension activity which would take the faster students a little further. This TED talk describes one of the most promising solutions which exist to solve both pollution and eutrophication from human activities with phosphates, and the potential global shortage of phosphorus from mining in 2070.</p><p>Then groups of six could decide on a mark scheme for a student answer to this question.</p><hr class="hidden"><p>Of course teachers are free to use the resources in whichever way best suites their students, the pressure on time and the school situation. If you are teaching in Florida or West Sahara a visit to a phosphorus mine could be real eye opener.</p><p>Further information can be found here: <a href="https://theconversation.com/fr/topics/phosphorus-1878" target="_blank">https://theconversation.com/fr/topics/phosphorus-1878</a><br>These articles are written by academics and are very accessible reading.</p></div><script>document.querySelectorAll('.tib-teacher-only').forEach(e => e.remove());</script>
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