NEET · BiologyMedium
Which amino acid contains a sulfur atom in its side chain?
- A.Serine
- B.Cysteine
- C.Valine
- D.Aspartic acid
Show correct answer & step-by-step solution
Correct answer: B — Cysteine
Solution
- Serine contains a hydroxyl group.
- Valine is a branched-chain aliphatic amino acid.
- Aspartic acid is an acidic amino acid with a carboxyl group.
- Cysteine contains a thiol group, , which includes sulfur.
- Hence the answer is (B).
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