Your Classmate Is Trying to Keep All the Facts About

Multiple Choice

Your classmate is trying to keep all the facts about biological molecules straight. He asks you to explain how amino acids and proteins are related. What do you tell him?

A) Proteins are made up of chains of amino acids.
B) Amino acids are formed by joining together many proteins.
C) Proteins are chains of carbohydrates, and amino acids are a type of lipid.
D) Proteins are a portion of an amino acid.