Enzymes lower the activation energy of a chemical reaction. Does this describe the role of an enzyme in the decomposition of a substrate?

I really need to know. The actual question is :

I.Each enzyme is very specific and can only catalyze a certain reaction by binding to its substrate at its active site.

II.Enzymes lower the activation energy of a chemical reaction.

III. Inhibitors are molecules that regulate the activity of enzymes.


Which of the statements above best explains the role of an enzyme in the decomposition of a substrate?

A. I only
B. II only
C. III only
D. I and II only
E. I, II, and III


Answer: Likely D.