CAIE A Level Biology 9700 · Energy and respiration

Energy and respiration: outline question

Outline4 marksStandard

Sprint athletes rely heavily on anaerobic respiration (lactate fermentation) during a 100 m race, while distance runners use aerobic respiration. Outline why aerobic respiration yields much more ATP per molecule of glucose than anaerobic respiration.

How this question is marked

4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.

Outline means: Give the main points briefly. Less detail than describe, but every key step has to be there. One short line per step, in order. The marks are for coverage, not depth.

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