For students taking A Level Sciences for OCR A Biology, this student book is produced in partnership with OCR. You can be confident that this book delivers the breadth, depth and skills needed at this level. Students' build on their prior experiences and develop real subject knowledge with increasing independence.

Module 1 Development of practical skills in Biology Module 2 Foundations in Biology Chapter 2 2.1: Microscopy 2.2: Magnification and calibration 2.3: More microscopy 2.4: Eukaryotic cell structure 2.5: The ultrastructure of plant cells 2.6: Prokaryotic and eukaryotic cells Chapter 2 Practice questions Chapter 3 Biological Molecules 3.1: Biological elements 3.2: Water 3.3: Carbohydrates 3.4: Testing for carbohydrates 3.5: Lipids 3.6: Structure of proteins 3.7: Types of proteins 3.8: Nucleic acids 3.9: DNA replication and the genetic code 3.10: Protein synthesis 3.11: ATP Chapter 3 Practice questions Chapter 4 Enzymes 4.1: Enzyme action 4.2: Factors affecting enzyme activity 4.3: Enzyme inhibitors 4.4: Cofactors, coenqymes, and prosthetic groups Chapter 4 Practice questions Chapter 5 Plasma membranes 5.1: The structure and function of membranes 5.2: Factors affecting membrane structure 5.3: Diffusion 5.4: Active transport 5.5: Osmosis Chapter 5 Practice questions Chapter 6 Cell division 6.1: The cell cycle 6.2: Mitosis 6.3: Meiosis 6.4: The organisation and specialisation of cells 6.5: Stem cells Chapter 6 Practice questions Module 2 summary Module 2 practice questions Module 3 Exchange and transport Module 3 Introduction Chapter 7 Exchange surfaces and breathing 7.1: Specialised exchange surfaces 7.2: The mammalian gaseous exchange system 7.3: Measuring the process 7.4: Ventilation and gas exchange inother organisms Chapter 7 Practice questions Chapter 8 Transport in animals 8.1: Transport systems in multicellular animals 8.2: Blood vessels 8.3: Blood, tissue fluid, and lymph 8.4: Transport of oxygen and carbon dioxide in the blood 8.5: The heart Chapter 8 Practice questions Chatper 9 Transport in plants 9.1: Transport systems in dicotyledonous plants 9.2: Water transport in multicellular plants 9.3: Transpiration 9.4: Translocation 9.5: Plant adaptations to water availability Chapter 9 Practice questions Module 3 summary Module 3 practice questions Module 4 Biodiversity, evolution and disease Module 4 introduction Chapter 10 Classification and evolution 10.1: Classification 10.2: The five kingdoms 10.3: Phylogeny 10.4: Evidence for evolution 10.5: Types of variation 10.6: Representing variation graphically 10.7: Adaptations 10.8: Changing population characteristics Chapter 10 practice questions Chapter 11 Biodiversity 11.1: Biodiversity 11.2: Types of sampling 11.3: Sampling techniques 11.4: Calculating biodiversity 11.5: Calculating genetic biodiversity 11.5: Factors affecting biodiversity 11.7: Reasons for maintaining biodiversity 11.8: Methods of maintaining biodiversity Chapter 11 practice questions Chapter 12 Communicable diseases 12.1: Animal and plant pathogens 12.2: Animal and plant diseases 12.3: The transmission of communicable diseases 12.4: Plant defences against pathogens 12.5: Non-specific animal defences against pathogens 12.6: The specific immune system 12.7: Preventing and treating disease Chapter 12 practice questions Module 4 summary Module 4 practice questions Module 5 Communication, homeostasis, and energy Chapter 13 Neuronal communication Chapter 13 Neuronal communication 13.1: Coordination 13.2: Neurones 13.3: Sensory receptors 13.4: Nervous transmission 13.5: Synapses 13.6: Organisation of the nervous system 13.7: Structure and function of the brain 13.8: Reflexes 13.9: Voluntary and involuntary muscles 13.10: Sliding filament model Chapter 13 Practice questions Chapter 14 Hormonal communication 14.1: Hormonal communication 14.2: Structure and function of the pancreas 14.3: Regulation of blood glucose concentration 14.4: Diabetes and its control 14.5: Coordinated responses 14.6: Controlling heart rate Chapter 14 Practice questions Chapter 15 Homeostasis 15.1: The principles of homeostasis 15.2: Thermoregulation in ectotherms 15.3: Thermoregulation in endotherms 15.4: Excretion, homeostasis, and the liver 15.5: The structure and function of the mammalian kidney 15.6: The kidney and osmoregulation 15.7: Urine and diagnosis 15.8: Kidney failure Chapter 15 Practice questions Chapter 16 Plant responses 16.1: Plant hormones and growth in platns 16.2: Plant responses to abiotic stress 16.3: Plant response to herbivory 16.4: Tropisms in plants 16.5: The commercial use of plant hormones Chapter 16 Practice questions Chapter 17 Energy for biological processes 17.1: Energy cycles 17.2: ATP synthesis 17.3: Photosynthesis 17.4: Factors affecting photosynthesis Chapter 17 Practice questions Chapter 18 Respiration 18.1: Glycolysis 18.2: Linking glycolysis and the Krebs cycle 18.3: The Kreb cycle 18.4: Oxidative phosphorylation 18.5: Aerobic respiration 18.6: Respiratory substrates Chapter 18 Practice questions Module 5 summary Module 5 questions Module 6 Genetics, evolution, and ecosystems Chapter 19 Genetics of living systems 19.1: Mutations and variation 19.2: Control of gene expression 19.3: Body plans Chapter 19 Practice questions Chapter 20 Patterns of inheritance and variation 20.1: Variation and inheritance 20.2: Monogenic inheritance 20.3: Dihybrid inheritance 20.4: Phenotypic ratios 20.5: Evolution 20.6: Speciation and artifical selection Chapter 20 Practice questions Chapter 21 Manipulating genomes 21.1: DNA profiling 21.2: DNA sequencing and analysis 21.3: Using DNA sequencing 21.4: Genetic engineering 21.5: Gene technology and ethics Chapter 21 Practice questions Chapter 22 Cloing and biotechnology 22.1: Natural cloning in plants 22.2: Artificial cloning in plants 21.4: Cloning in animals 22.4: Microorganisms and biotechnology 22.5: Microorganisms, medicines, and bioremediation 22.6: Culturing microorganisms in the laboratory 22.7: Culturing microorganisms on an industrial scale 22.8: Using immobilised enzymes Chapter 22 Practice questions Chapter 23 Ecosystems 23.1: Ecosystems 23.2: Biomass transfer through an ecosystem 23.3: Recycling within ecosystems 23.4: Succession 23.5: Measuring the distribution and abundance of organisms Chapter 23 Practice questions Chapter 24 Populations and sustainability 24.1: Population size 24.2: Competition 24.3: PredatorDSprey relationships 24.4: Conservation and preservation 24.5: Sustainability 24.6: Ecosystem management DS Masai mara 24.7: Ecosystem management DS Terai region of Nepal 24.8: Ecosystem management DS Peat bogs 24.9: Environmentally sensitive ecosystems Chapter 24 Practice questions Module 6 summary Module 6 questions

The best support for OCR Biology A from OCR's Resource Partner A complete linear textbook, written specifically for the new linear exams Full synoptic support, with synoptic links and questions throughout, and a dedicated unifying concepts chapter Differentiation for support and extension, with ramped questions in every topic, and clearly identified extension material Support for independent study, with plenty of differentiated questions, checklists, and module summaries Preparation for the new practical questions, with exam-relevant practical skills developed throughout the book Support for mathematical skills, with worked examples and practice questions Practice exam-style questions, including multiple choice, maths, practical, and synoptic style questions Supported by next generation Kerboodle, offering unrivalled digital support for independent study, differentiation, assessment, and the new practical endorsement

The best support for OCR Biology A from OCR's Resource Partner Full synoptic support, with synoptic links and questions throughout, and a dedicated unifying concepts chapter Differentiation for support and extension, with ramped questions in every topic, and clearly identified extension material Encourages independent study, with plenty of differentiated questions, checklists, and module summaries Preparation for the new practical questions, with exam-relevant practical skills developed throughout the book Specific focus on mathematical skills, with worked examples and practice questions Practice exam-style questions, including multiple choice, maths, practical, and synoptic style questions Supported by next generation Kerboodle, offering unrivalled digital support for independent study, differentiation, assessment, and the new practical endorsement.