Question

Protein is a polymer of _______ acids.

• A. $\alpha$- amino
• B. $\beta$- amino
• C. combination of (a) and (b)
• D. none of the above

Answer 1

The correct option is A $\alpha$- amino

Proteins are large biological molecules, or macromolecules, consisting of one or more long chains of amino acid residues.
A linear chain of amino acid residues is called a polypeptide. A protein contains at least one long polypeptide. Short polypeptides, containing less than about 20-30 residues, are rarely considered to be proteins and are commonly called peptides, or sometimes oligopeptides. The individual amino acid residues are bonded together by peptide bonds and adjacent amino acid residues.

Protein is a polypeptide formed by monomer alpha amino acids.

Hence, the correct answer is option (a).