A single protein strand folded into a stable, functional domain represents
A)primary structure.
B)secondary structure.
C)tertiary structure.
D)quaternary structure.
E)most macromolecules.

Question

Quizplus · Accepted Answer

A single protein strand folded into a stable, functional domain represents tertiary structure. Primary structure refers to the linear sequence of amino acids, while secondary structure refers to patterns of hydrogen bonding within the chain, such as alpha helices and beta sheets. Quaternary structure involves the association of multiple individual protein subunits to form a larger protein complex. The given statement does not describe most macromolecules, as many macromolecules consist of multiple subunits or domains.

A Single Protein Strand Folded into a Stable, Functional Domain