Question

Proteins, which are tremendously complex molecules, what are their basic units or building blocks?
Select one:
A. Polypeptides
B. NH2
C. Carbohydrates
D. Amino acids​

Answer 1

Answer:

B. NH2

_________________

Answer 2

Answer:

Amino acids

Explanation:

The basic building block of a protein is called an amino acid. There are 20 amino acids in the proteins you eat and in the proteins within your body, and they link together to form large protein molecules. The variety of ways they mix and match allows for the great diversity of proteins in nature.