Answer: Option (a) is the correct answer.
Explanation:
An enzyme is a type of protein that acts as a catalyst which helps in speeding up a biochemical reaction in living organisms.
Whereas inhibitors are the substances that inhibit the speed of a chemical reaction. That is, inhibitors help in slow down of a chemical reaction.
The basic building blocks of proteins are known as amino acids.
Thus, we can conclude that enzymes are the proteins that speed up chemical reactions.
