Question

Protein is a polymer of

• A. Amino acid
• B. $\alpha$ -D-amino acid
• C. $\alpha$ -L-amino acid
• D. $\beta$ -amino acid

Answer 1

Answer: (C)

Protein is a polymer of $\alpha$ -L-amino acid in which $\alpha$ L-amino acid are join together by peptide bonds.

Protein contains only $\alpha$ -L-amino acid residues.