20
QuizMultiple Choice

Photosynthesis and Cellular Respiration — Unit test

Question 20 • First Semester Biology

If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?

Answer
A
The rate would increase.
B
The rate would decrease.
C
The rate would remain the same.
D
The rate would be zero.

Explanation

At the same temperature, lowering the activation energy means a larger fraction of reacting particles have enough energy to react when they collide. More successful collisions occur per unit time, so the reaction rate increases. The correct choice is C, “The rate would increase.”

AI-written and checked against the verified answer.

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