Which of the following types of amino acids is characterized by a side chain that contains a sulfur atom?

A Aliphatic amino acids
B Aromatic amino acids
C Sulfur-containing amino acids ✓
D Basic amino acids

Explanation

Sulfur-containing amino acids, such as methionine and cysteine, have a side chain that contains a sulfur atom, which plays an important role in their chemical properties and biological functions.

Source

Nelson et al., Lehninger Principles of Biochemistry
Protein Metabolism Biochemistry Amino Acid Structure and Properties Easy MEDICAL Confidence: high