Biology 9700 · AS & A Level · Factors that affect enzyme action

Factors that affect enzyme action — practice question

Invertase is the enzyme that catalyses the breakdown of sucrose into glucose and fructose. Three different enzyme inhibitors of invertase, X, Y and Z, were studied. The percentage inhibition of invertase was recorded at a range of inhibitor concentrations. The graph shows the findings of the investigation. Which conclusions are valid from these results?

  • A1 and 2
  • B1 only
  • C2 and 3
  • D3 only

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