Acidic property to a-carbon of amino acid is due to-: (A) Carboxyl group, (B) Amino group, (C) Hydrogenatom, (D) None
Answer is A. Ans. is 'a' i.e., Carboxyl groupo The acid base properties of amino acids depend on the amino and carboxyl groups attached to the a-carbon.i) The carboxyl (-COOH) group of an amino acid can donate protein (H+) and behave as an acid forming a negatively charged anion (COO-).ii) Amino group (-NH2) can accept proton (H+) and behave as a base, forming positively charged cation (NH3+). o Thus, amino acids in aqueous solution are ionized and act as acids and bases.