How to use this book; 1. Cell structure; 2. Biological molecules; 3. Enzymes; 4. Cell membranes and transport; 5. The mitotic cell cycle; 6. Nucleic acids and protein synthesis; 7. Transport in plants; 8. Transport in mammals; 9. Gas exchange and smoking; 10. Infectious diseases; 11. Immunity; P1. Practical skills for AS; 12. Energy and respiration; 13. Photosynthesis; 14. Homeostasis; 15. Coordination; 16. Inherited change; 17. Selection and evolution; 18. Biodiversity, classification and conservation; 19. Genetic technology; P2. Planning, analysis and evaluation; Answers to Progress Check questions; Answers to Exam-style questions; Glossary; Index