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How does an enzyme affect the rate of a reaction - JAMB Biology 2017 Question

How does an enzyme affect the rate of a reaction?
A
It lowers the activation energy of the reaction, increasing the reaction rate.
B
It raises the activation energy of the reaction, decreasing the reaction rate.
C
It lowers the activation energy of the reaction, decreasing the reaction rate.
D
It raises the activation energy of the reaction, increasing the reaction rate.
correct option: a
Enzymes lower the activation energy of a reaction, increasing the reaction rate.
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