A-LevelBiologyEnzymes9700/12 · May/June 2025 · Q141 Mark

Which graphs could show the effect of pH on the rate of enzyme-catalysed reactions? [Figure 14.1 (four graphs of rate of reaction vs pH)]

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A1 and 2

B1 and 3

C2 and 4

D3 and 4

✓ Correct answer

C: 2 and 4

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