Cellular respiration (aerobic and anaerobic) — the chemistry of energy release. The structure of the breathing system. Mechanism of breathing. Gas exchange in the alveoli. Effects of exercise. Smoking and lung disease.
Tested by
- Edexcel IGCSE Human Biology — 7. Respiration
- Edexcel IGCSE Human Biology — 8. Gas exchange
- Edexcel IGCSE Combined Science — Biology (Bioenergetics + Organisation subsections)
- AQA GCSE Combined Science Trilogy — Biology (Bioenergetics)