WJEC Biology for A2: Student Bk

Contents Introduction 4 Assessment 6 Practical work 9 Specification map 10 Unit 3 CH1 Importance of ATP 14 CH2 Photosynthesis 20 CH3 Respiration 42 CH4 Microbiology 54 CH5 Population size and ecosystems 64 CH6 Human impact on the environment 96 CH7 Homeostasis and the kidney 118 CH8 The nervous system 138 Exam practice questions for Unit 3 151 Unit 4 CH9 Sexual reproduction in humans 158 CH10 Sexual reproduction in plants 176 CH11 Inheritance 194 CH12 Variation and evolution 217 CH13 Application of reproduction and genetics 234 CH14 Option A: Immunology and disease 260 CH15 Option B: Human musculoskeletal anatomy 278 CH16 Option C: Neurobiology and behaviour 302 Exam practice questions for Unit 4 324 Answers to Knowledge check questions 331 Answers to Exam practice questions 333 Glossary 337 Index 341 Contents 3