Biology for IGCSE & O level - Enzymes (Section 4 - No. 25)
What is the relationship between enzymes and the rate of reactions?
Enzymes increase the rate of reaction by decreasing the activation energy.
Enzymes decrease the rate of reaction by increasing the activation energy.
Enzymes have no effect on the rate of a reaction.
Enzymes can only speed up reactions in one direction.
Explanation
Enzymes speed up the rate of reactions by lowering the activation energy.
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