Amino acids are amphiprotic molecules because of the presence of ......

Options :
  1. Acidic (carboxyl) groups
  2. Basic (amino) groups
  3. Both acidic (carboxyl) and basic (amino) groups
  4. Because of different side chains
Answer and Explanation :-

Answer: Option 3

Explanation:

An amphoteric species is a molecule or ion that can react as an acid as well as a base. One type of amphoteric species are amphiprotic molecules, which can either donate or accept a proton (H+). Examples include amino acids and proteins, which have amine and carboxylic acid groups, and self-ionizable compounds such as water and ammonia

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