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.
jamb 2017biology

The correct answer is A. It lowers the activation energy of the reaction, increasing the reaction rate.

Enzymes lower the activation energy of a reaction, increasing the reaction rate.

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