February/March 2026 Paper 22

2026 · 40 questions · 40 parts · 40 marks

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8Enzymes Enzyme KineticsEasy1 mark
The graph shows the activity of an enzyme.
Graph of enzyme activity against pH from 1 to 14, rising from pH 1 to a peak at about pH 3 and falling to zero at pH 7
What does the graph show about the activity of this enzyme?