A-LevelBiologyEnzymes9700/12 · May/June 2016 · Q101 Mark
In two investigations, the rate of an enzyme-catalysed reaction was measured in the presence of either a competitive inhibitor or a non-competitive inhibitor. What could be the effect of increasing the substrate concentration on each rate of reaction?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Awith competitive inhibitor: decreases, with non-competitive inhibitor: no change
Bwith competitive inhibitor: increases, with non-competitive inhibitor: decreases
Cwith competitive inhibitor: increases, with non-competitive inhibitor: no change
Dwith competitive inhibitor: no change, with non-competitive inhibitor: decreases
✓ Correct answer
C: with competitive inhibitor: increases, with non-competitive inhibitor: no change
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