In a laboratory, two batches of leg muscle cells from a greyhound are kept contracting until both batches have released the same total amount of energy. Batch R has a good supply of oxygen and respires aerobically. Batch S has no oxygen and respires anaerobically.
Which statement about the glucose used by the two batches is correct?
R uses more glucose, because aerobic respiration breaks each glucose molecule down completely
R and S use equal amounts of glucose, because both pathways have glucose as their substrate
S uses less glucose, because anaerobic respiration leaves no energy locked in its product
R uses less glucose, because aerobic respiration releases more energy from each glucose molecule
98 exam-style questions on Edexcel GCSE Biology 8.3 Respiration, covering 8.3.1 Aerobic and anaerobic respiration. Each one has a worked solution and a mark scheme showing where the marks go.