difficulty mix of each set, easier to harder
1Ecology and the environment
2Reproduction and inheritance
3Structure and functions in living organisms
- Biological molecules and food tests10
- Blood, immunity and clotting10
- Co-ordination, homeostasis and plant responses (tropisms)10
- Diffusion, osmosis and active transport10
- Enzymes (temperature and pH)10
- Excretion and the kidney10
- Gas exchange in flowering plants10
- Gas exchange in humans and smoking10
- Heart, blood vessels and circulation10
- Hormones10
- Human diet, digestion and absorption10
- Levels of organisation, cell structure and stem cells10
- Nervous system, synapses and reflex arcs10
- Photosynthesis and plant nutrition10
- Respiration10
- The eye and the skin in temperature regulation10
- Transport in plants (xylem, phloem, transpiration)10
4The nature and variety of living organisms
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