Cambridge IGCSE Biology Whole-chapter workbooks for the Cambridge IGCSE (0610) course. 01. Characteristics and classification of living organisms 02. Cells 03. Transport across a membrane 04. Biological molecules 05. Enzymes 06. Plant nutrition 07. Animal nutrition 08. Transport in plants 09. Transport in animals 10. Disease and immunity 11. Gas exchange in humans 12. Respiration 13. Excretion 14. Coordination and Response 15. Drugs 16. Reproduction 17. Inheritance 18. Variation 19. Organisms and their environment 20. Biotechnology and genetic engineering 21. Human influences on ecosystems