A scientist measures oxygen uptake after exercise and subtracts the resting oxygen uptake expected over the same period. What does the remaining value estimate?
The extra oxygen required after exercise to react with accumulated lactic acid
The total oxygen used during exercise to produce accumulated carbon dioxide
The oxygen stored in muscle cells before exercise for complete glucose oxidation
The oxygen released by the liver while converting accumulated glucose to lactic acid
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.