Biology 9700 · AS & A Level · Carbohydrates and lipids

Carbohydrates and lipids — practice question

Olestra is a synthetic lipid. It is formed when fatty acids are joined to a sucrose molecule by condensation. A simplified diagram of olestra is shown below. $R$ marks the point at which fatty acids would be linked. Humans are unable to hydrolyse olestra. Other animals, however, may be able to hydrolyse it. How many water molecules would be required to hydrolyse one molecule of olestra into fatty acids, fructose and glucose?

  • A11
  • B10
  • C9
  • D8

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