A competitive inhibitor slows an enzyme-catalysed reaction. Which change can reduce its effect?
Answer and explanation
Correct answer: A. Raising the substrate concentration
- Step 1: A competitive inhibitor resembles the substrate and binds the active site.
- Step 2: Binding is reversible, so a high substrate concentration makes substrate bind more often than inhibitor.
Answer
raise the substrate concentration.
Why not the others: More inhibitor increases inhibition; less substrate favours the inhibitor; a second inhibitor at another site adds non-competitive inhibition.
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