A-LevelBiologyEnzymes9700/12 · Oct/Nov 2021 · Q151 Mark
The graph shows the relationship between the concentration of substrate and the rate of an enzyme-catalysed reaction. [Figure showing a graph of rate of enzyme-catalysed reaction vs. concentration of substrate] Which row shows how Km and Vmax for this enzyme would be affected if the same reaction was carried out in the presence of a competitive inhibitor? [Table showing changes in Km and Vmax]
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.
AKm: increases, Vmax: decreases
BKm: increases, Vmax: remains the same
CKm: remains the same, Vmax: decreases
DKm: remains the same, Vmax: remains the same
✓ Correct answer
B: Km: increases, Vmax: remains the same
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