Equal masses of germinating peas are kept at four temperatures. The carbon dioxide produced in 20 minutes is measured. Which result best supports the conclusion that respiration is controlled by enzymes that can denature?
Production rises steadily from 10 °C to 70 °C without reaching a maximum
Production is greatest at an intermediate temperature and lower at 70 °C
Production remains identical at every temperature because mass is controlled
Production is lowest at an intermediate temperature and greatest at 70 °C
51 exam-style questions on AQA GCSE Biology 4.2 Respiration, covering 4.2.1 Aerobic and anaerobic respiration, 4.2.2 Response to exercise, and 4.2.3 Metabolism. Each one has a worked solution and a mark scheme showing where the marks go.