Which observation most directly shows that respiration is exothermic rather than simply showing that respiration is occurring?
The oxygen concentration falls inside a sealed container of living seeds
The temperature rises in living seeds but not in an equal mass of boiled seeds
The carbon dioxide concentration rises around living yeast supplied with glucose
The glucose concentration falls in muscle tissue during repeated contractions
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.