Biology 9700 · AS & A Level · Mode of action of enzymes

Mode of action of enzymes — practice question

The equation represents a reversible reaction. $\text{sucrose} + \text{water} \; \rightleftharpoons \; \text{glucose} + \text{fructose}$ (This occurs in the presence of sucrase.) For this reaction, which molecule has an active site, and what kind of reactions take place at 1 and 2?

  • Aactive site on sucrase; reaction at 1 condensation; reaction at 2 hydrolysis
  • Bactive site on sucrase; reaction at 1 hydrolysis; reaction at 2 condensation
  • Cactive site on sucrose; reaction at 1 condensation; reaction at 2 hydrolysis
  • Dactive site on sucrose; reaction at 1 hydrolysis; reaction at 2 condensation

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