A-LevelBiologyEnzymes9700/12 · Oct/Nov 2018 · Q141 Mark

Aspirin inhibits an enzyme by reacting with an amino acid that forms an essential part of the 3D structure of the enzyme. Part of the aspirin molecule binds firmly with the amino acid. What describes this inhibition? 1 competitive inhibition 2 non-competitive inhibition 3 reversible inhibition

A1 and 3

B1 only

C2 and 3

D2 only

✓ Correct answer

D: 2 only

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