A-LevelBiologyEnzymes9700/12 · May/June 2020 · Q131 Mark
The diagram shows a metabolic pathway. [Figure 13.1] What would be the effect of adding a small amount of a non-competitive inhibitor of enzyme 2?
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.
AEnzyme 2 would be partially denatured.
BSubstance X would increase in concentration.
CSubstance Y would no longer be formed.
DThe initial reactant would no longer be metabolised.
✓ Correct answer
B: Substance X would increase in concentration.
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