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NEETChemistryBiomolecules

All -amino acids have a general formula R - CH ( NH ₂)- COOH (except proline). If the side chain R is - CH ₂- COOH , identify the correct name and the nature of the amino acid.

Options

  1. AGlutamic acid, Acidic
  2. BAsparagine, Neutral
  3. CAspartic acid, Neutral
  4. DAspartic acid, Acidic

Correct answer

D. Aspartic acid, Acidic

Step-by-step solution

The given side chain is R = - CH ₂- COOH . Substituting this into the general formula R - CH ( NH ₂)- COOH gives the structure of Aspartic acid. Because the molecule contains two carboxyl ( - COOH ) groups and only one amino ( - NH ₂ ) group, it has more acidic groups than basic groups. Therefore, it is classified as an acidic amino acid. Glutamic acid has the side chain - CH ₂- CH ₂- COOH . Asparagine has the side chain - CH ₂- CONH ₂ and is neutral. Answer: Aspartic acid, Acidic

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