What are the Basic Subunits of Proteins

Question

What are the basic subunits of proteins?
A) amino acids
B) peptide bonds
C) carboxyl groups
D) nucleotides
E) codons

Accepted Answer

The basic subunits of proteins are amino acids, which are joined by peptide bonds to form polypeptide chains. Carboxyl groups are also present in amino acids but are not the basic subunit of proteins. Nucleotides are the basic subunits of nucleic acids, not proteins. Codons are sequences of three nucleotides that code for a specific amino acid.