Edexcel GCSE (9-1)BiologyMark Levesley Sue KearseyALWAYS LEARNINGPEARSONContentsTeaching and learningivSB3Genetics(Paper 1)49SB3aSexual and asexual reproduction50SB1Key Concepts in Biology (Paper 1 andSB3bMeiosis52Paper 2)SB3ciDNA54SB1aMicroscopes2SB3ciiDNA extraction56SB1bPlant and animal cellsSB3dProtein synthesis58SB1bCore practical-Using microscopes6SB3eGenetic variants and phenotypes60SB1cSpecialised cellsSB3fMendel62SB1dInside bacteria10SB3gAlleles64SB1eEnzymes and nutrition12SB3hInheritance66SB1fTesting foods14SB3iMultiple and missing alleles68SB1fCore practical-Testing foods16SB3jGene mutationSB1gEnzyme action18SB3kVariation72SB1hEnzyme activity20SB3Preparing for your exams74SB1hCore practical-pH and enzymes22SB1iTransporting substances24SB4Natural Selection and GeneticSB1iCore practical-Osmosis in potato slices26Modification(Paper 1)75SB1Preparing for your exams28SB4aEvidence for human evolution76SB4bDarwin's theory78SB4cDevelopment of Darwin's theory80SB4dClassification82SB2Cells and Control(Paper 1)SB4eBreeds and varieties84SB2aMitosis30SB4fTissue culture86SB2bGrowth in animals32SB4gGenes in agriculture and medicine88SB2cGrowth in plants34SB4hGM and agriculture90SB2dStem cells36SB4iFertilisers and biological control92SB2eThe brain38SB4Preparing for your exams94SB2fBrain and spinal cord problems40SB2gThe nervous system42SB2hThe eye44SB2iNeurotransmission speedsHealth,Disease and the Developmentof Medicines(Paper 1)95SB2Preparing for your exams48SB5aHealth and disease96SB5bNon-communicable diseases98SB5cCardiovascular disease100SB5dPathogens102SB5eSpreading pathogens104SB5fVirus life cycles106SB5gPlant defences108SB5hPlant diseases110SB5iPhysical and chemical barriers112SB5jThe immune system114SB5kAntibiotics116SB5kCore practical-Antibiotics118Monoclonal antibodies120SB5Preparing for your exams122ContentsSB6Plant Structures and their FunctionsSB9Ecosystems and Material Cycles(Paper 2)123(Paper 2)175SB6aPhotosynthesis124SB9aEcosystems176SB6bFactors that affect photosynthesis126SB9bEnergy transfer178SB6bCore practical-Light intensity and photosynthesis128SB9cAbiotic factors and communities180SB6cAbsorbing water and mineral ions130SB9cCore practical-Quadrats and transects182SB6dTranspiration and translocation132SB9dBiotic factors and communities184SB6ePlant adaptations134SB9eAssessing pollution186SB6fPlant hormones136SB9fParasitism and mutualism188SB6gUses of plant hormones138SB9gBiodiversity and humans190SB6Preparing for your exams140SB9hPreserving biodiversity192SB9iFood security194SB9jThe water cycle196SB7Animal Coordination,Control andSB9kThe carbon cycle198Homeostasis(Paper 2)141The nitrogen cycle200SB7aHormones142SB9mRates of decomposition202SB7bSB9Preparing for your exams204Hormonal control of metabolic rate144SB7cThe menstrual cycle146SB7dHormones and the menstrual cycle148SB7eControl of blood glucose150Glossary205SB7fType 2 diabetes152Index211SB7gThermoregulation154SB7hOsmoregulation156SB7iThe kidneys158SB7Preparing for your exams160SB8Exchange and Transport in Animals(Paper 2)161SB8aEfficient transport and exchange162SB8bFactors affecting diffusion164SB8cThe circulatory system166SB8dThe heart168SB8eCellular respiration170SB8eCore practical-Respiration rates172SB8Preparing for your exams174