Proteins: Structure and Functions · NCERT Biology

Which of the following is an example of an aromatic amino acid?

  1. Valine (aliphatic)
  2. Tyrosine (aromatic)
  3. Serine (hydroxyl)
  4. Lysine (basic)
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Correct answer: Tyrosine (aromatic)

Tyrosine, phenylalanine, and tryptophan are aromatic amino acids because they contain benzene ring side chains. Valine is a nonpolar aliphatic amino acid, Lysine is basic, and Serine is a hydroxyl-containing amino acid.

Difficulty: Medium Question 6 of 20

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