Biology 9700 · AS & A Level · Carbohydrates and lipids

Carbohydrates and lipids — practice question

The diagram illustrates a triglyceride molecule. Which statement correctly describes the structure and function of this triglyceride?

  • 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.

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