Multiple choice Which of the following features are associated with cysteine amino acid? A. Aliphatic, B. 2 methyl groups and C. Sulphur atom A. Aliphatic, B. 3 methyl groups and C. Carboxylic acid functional group A. Aliphatic, B. 2 methyl groups and C. Hydroxyl functional group A. Aromatic, B. 2 methyl groups and C. Hydroxyl functional group A. Aliphatic, B. 5 methyl groups and C. No functional group Reveal answer Fill a bubble to check yourself A Correct answer Explanation These features are of cysteine amino acid.