Question

Which statement best explains how enzymes speed up chemical reactions?

A. Enzymes gain heat from chemical reactions

B. Enzymes change shape during chemical reactions

C. Enzymes lower the activation energy of a reaction.

D. Enzymes use light energy to speed up chemical reactions

Answer 1

The answer is, A. Enzymes lower the activation energy of a chemical reaction.

Step-by-step explanation:

I took the test on K-12 and it was correct

Answer 2

It is A. Enzymes lower the activation energy of a reaction.