Metabolic rate is the rate at which the reactions of metabolism take place in the body. A student said, 'Two people can have the same body mass but different metabolic rates.'
Suggest why a person with a large mass of muscle tissue has a higher metabolic rate than a person of the same body mass with less muscle tissue.
Some of the energy transferred by respiration is used to build larger molecules from smaller ones. Give two examples of this in the human body.
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.