A-LevelBiologyEnzymes9700/12 · Oct/Nov 2025 · Q161 Mark

Which statements are correct for a non-competitive inhibitor of enzyme action? 1 Increasing the concentration of the enzyme's substrate will reduce its effect. 2 It reduces the activation energy required for a reaction to take place. 3 It reduces the maximum rate of reaction.

A1 and 3

B1 only

C2 and 3

D3 only

✓ Correct answer

D: 3 only

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