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Biology · Oct / Nov 2019 · Paper 12 · Question 4

5090Enzyme action

What happens to an enzyme after it has catalysed a reaction?

  1. AIt can no longer fit the substrate molecules.
  2. BIt can now catalyse several different reactions.
  3. CIt has become part of the product molecules.
  4. DIt is available to catalyse the same reaction again.

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Correct answer: D. It is available to catalyse the same reaction again.

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