Enzymes speed up reactions by
Salam Academy Original Practice · Proposed mark scheme
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12 questions
A reaction reaches its end point in 40 s. Calculate the rate (s⁻¹).
Salam Academy Original Practice · Proposed mark scheme
Above the optimum temperature, rate falls because
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A competitive inhibitor
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A non-competitive inhibitor
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An enzyme with a low Km
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The induced fit model states that
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At high substrate concentration, the rate is limited by
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Initial rate is found from a product–time graph by
Salam Academy Original Practice · Proposed mark scheme
An advantage of immobilised enzymes is that they
Salam Academy Original Practice · Proposed mark scheme
Vmax = 10 units and Km = 2 mmol dm⁻³. Calculate v when [S] = 6 mmol dm⁻³.
Salam Academy Original Practice · Proposed mark scheme
Changing pH affects enzymes mainly by
Salam Academy Original Practice · Proposed mark scheme