CAIE A Level Biology 9700 · Energy and respiration
A diagram of a mitochondrion shows the following labelled structures: outer membrane, inner membrane (folded into cristae), intermembrane space, and matrix. Explain how the structure of the mitochondrion is adapted for its role in the link reaction and oxidative phosphorylation. In your answer, state where each process occurs.
6 marks, so the mark scheme is looking for about 6 separate creditworthy points. Making the same point twice in different words earns it once.
Explain means: Give the reasons or the mechanism: why or how something happens. Link each point to the next with because, so or which means. A list of facts with no links usually loses the reasoning marks.
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