AMAZING IGCSE Cambridge notes

Transform your IGCSE Biology teaching with this ready-to-use Topic 11 resource!
This resource covers gas exchange and respiration in humans, with clear notes, diagrams, and exam-focused explanations. It includes the features of gas exchange surfaces, the structure of the breathing system, ventilation mechanics, and the differences between inspired and expired air. Respiration is covered in detail, with word and balanced equations for both aerobic and anaerobic respiration, alongside explanations of oxygen debt and the role of lactic acid. The effects of exercise and smoking on the breathing system are also included. Perfect for classroom teaching, independent study, or targeted exam revision – it saves hours of planning while giving students everything they need to succeed.