7
QuizMultiple Choice

The Process of Photosynthesis — Unit test

Question 7 • First Semester Biology

How does a catalyst influence a chemical reaction?

Answer
A
It speeds up or slows down a chemical reaction by direct participation.
B
It reacts with products to increase the concentration of reactants.
C
It decreases the amount of energy necessary for the reaction to proceed.
D
It increases the total amount of products formed.

Explanation

A catalyst provides an alternative reaction pathway with a lower activation energy, so less energy is needed for the reaction to proceed. It can make the reaction happen faster, but it does not increase the total amount of product at equilibrium. Therefore, the correct choice is “It decreases the amount of energy necessary for the reaction to proceed.”

AI-written and checked against the verified answer.

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