AQA Combined Biology 1. Cell Biology Cell structure Part 1 Part 2 Mark Scheme 2. Organisation Tissues, organs and systems Part 1 Part 2 Mark Scheme Enzymes Part 1 Part 2 Mark Scheme Transport in plants and cells Part 1 Part 2 Mark Scheme 3. Infection and Response Communicable Disease Part 1 Part 2 Mark Scheme Drugs Part 1 Part 2 Mark Scheme 4. Bioenergetics Photosynthesis Part 1 Part 2 Mark Scheme Respiration Part 1 Part 2 Mark Scheme 5. Homeostasis and Response The nervous system and hormones Part 1 Part 2 Mark Scheme Glucose levels and homeostasis Part 1 Part 2 Mark Scheme 6. Inheritance, variation and evolution Genetic inheritance Part 1 Part 2 Part 3 Mark Scheme Variation and evolution I Part 1 Part 2 Mark Scheme Variation and evolution II Part 1 Part 2 Mark Scheme 7. Ecology The environment Part 1 Part 2 Mark Scheme Adaptations, interdependence, and competition Part 1 Part 2 Mark Scheme Trophic levels (Biology ONLY) Part 1 Part 2 Mark Scheme