Question

Enormous diversity of protein molecules is due to

• A. Sequence of amino acids
• B. R-groups of amino acids
• C. Amino groups of amino acids
• D. Peptide bonds

Answer 1

Answer: (A)

Sequence of amino acids

Proteins are building blocks of the body. The proteins are made up of amino acids. The amino acids are linked together by peptide bonds to form a protein. The amino acids consist of amine group made up of nitrogen and hydrogen and the carboxyl group at the end and a side chain of R group which is specific to a particular amino acid. This specific group brings a variability to the proteins. If R group is H it is glycine while if it is CH${}_2$ it is alanine. The sequence of amino acids determines the protein.

So, the correct answer is option D.