A-LevelBiologyBiological molecules9700/12 · Oct/Nov 2025 · Q81 Mark
The diagram shows a triglyceride molecule. [Diagram of a triglyceride molecule] Which statement is correct for the structure and function of this triglyceride?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AThe glycerol head forms hydrogen bonds with water in cytoplasm to produce oil droplets.
BThe hydrophobic fatty acids allow only small molecules to pass through the cell surface membrane.
CIt packs closely with identical triglyceride molecules to form energy reserves in lysosomes.
DIt has long hydrocarbon chains that release high energy output per unit mass when oxidised.
✓ Correct answer
D: It has long hydrocarbon chains that release high energy output per unit mass when oxidised.
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