Valine is an essential amino acid since it cannot be synthesized by the body. Which of the following describes the side chain of valine?
Contains a sulfhydryl group
Contains a branched chain hydrocarbon
Contains an aromatic ring
Doesn't have a side chain
Valine, along with isoleucine and leucine, are branched chain amino acids. Cysteine contains a sulfhydryl group. Phenylalanine contains an aromatic ring. Glycine doesn't have a side chain.