Question

Based on which of the following, amino acids are classified?

(a) Based on the number of hydrogen

(b) Based on the number of carbon atoms

(c) Based on the number of ions

(d) Based on the number of amino and carboxyl groups

I have been asked this question during an interview.

Enquiry is from Biomolecules in section Biomolecules of Biology – Class 11

Answer 1

Correct answer is (d) Based on the number of amino and carboxyl groups

Easiest explanation: Based on the number of amino and carboxyl groups, there are acidic (e.g., glutamic acid, aspartic acid), basic (lysine, arginine) and neutral (valine) amino acids. Similarly, there are aromatic amino acids like phenylalanine, etc.