1. Characteristics and classification of living organisms1.1 Classification of living organisms1. Characteristics and classification of living organisms1.1 Classification of living organisms2. Organisation of the organism2.1 Cell structure2.2 Cell division2.3 Principles of organisation2.4 Animal tissues, organs and organ systems2.5 Plant tissues, organs and systems2. Organisation of the organism2.1 Cell structure2.2 Cell division2.3 Principles of organisation2.4 Animal tissues, organs and organ systems2.5 Plant tissues, organs and systems3. Movement in and out of cells3.1 Transport in cells3. Movement in and out of cells3.1 Transport in cells4. Biological molecules4.1 Biological molecules4. Biological molecules4.1 Biological molecules5. Enzymes5.1 Enzymes5. Enzymes5.1 Enzymes6. Plant Nutrition6.1 Photosynthesis6. Plant Nutrition6.1 Photosynthesis7. Human nutrition7.1 Human nutrition7. Human nutrition7.1 Human nutrition8. Transport in plants8.1 Transport in plants8. Transport in plants8.1 Transport in plants9. Transport in animals9.1 Transport in animals9. Transport in animals9.1 Transport in animals10. Diseases and immunity10.1 Communicable diseases10.2 Monoclonal antibodies10.3 Plant disease10. Diseases and immunity10.1 Communicable diseases10.2 Monoclonal antibodies10.3 Plant disease11. Gas exchange in human11.1 Gas exchange in human11. Gas exchange in human11.1 Gas exchange in human12. Respiration12.1 Respiration12. Respiration12.1 Respiration13. Excretion in humans13.1 Excretion in humans13. Excretion in humans13.1 Excretion in humans14. Coordination and response14.1 Homeostasis14.2 The human nervous system14.3 Hormonal coordination in humans14.4 Plant hormones14. Coordination and response14.1 Homeostasis14.2 The human nervous system14.3 Hormonal coordination in humans14.4 Plant hormones15. Drugs15.1 Drugs15. Drugs15.1 Drugs16. Reproduction16.1 Reproduction16. Reproduction16.1 Reproduction17. Inheritance17.1 The development of understanding of genetics and evolution17. Inheritance17.1 The development of understanding of genetics and evolution18. Variation and selection18.1 Variation and evolution18. Variation and selection18.1 Variation and evolution19. Organisms and their environment19.1 Adaptations, interdependence and competition19.2 Organisation of an ecosystem19.3 Trophic levels in an ecosystem19. Organisms and their environment19.1 Adaptations, interdependence and competition19.2 Organisation of an ecosystem19.3 Trophic levels in an ecosystem20. Human influences on ecosystems20.1 Biodiversity and the effect of human interaction on ecosystems20.2 Food production20. Human influences on ecosystems20.1 Biodiversity and the effect of human interaction on ecosystems20.2 Food production21. Biotechnology and genetic modification21.1 Biotechnology and genetic modification21. Biotechnology and genetic modification21.1 Biotechnology and genetic modification