O-LevelBiologyEnzymes5090/12 · Oct/Nov 2014 · Q41 Mark
Which graph best represents the effect of pH on the action of gastric protease?
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.
AGraph showing a bell-shaped curve for rate of reaction, peaking at pH 7, dropping to zero at pH 1 and pH 14.
BGraph showing a bell-shaped curve for rate of reaction, peaking at pH 7, dropping to zero at pH 1 and pH 14.
CGraph showing a bell-shaped curve for rate of reaction, peaking at pH 2, dropping to zero at pH 1 and pH 7.
DGraph showing a bell-shaped curve for rate of reaction, peaking at pH 2, dropping to zero at pH 1 and pH 7.
✓ Correct answer
A: Graph showing a bell-shaped curve for rate of reaction, peaking at pH 7, dropping to zero at pH 1 and pH 14.
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