The alpha helix and beta pleated sheet are examples of
A)primary structure.
B)secondary structure.
C)tertiary structure.
D)quaternary structure.
E)gamma structure.

Question

Quizplus · Accepted Answer

The alpha helix and beta pleated sheet are examples of secondary structure, which refers to the local folding patterns of the polypeptide chain, typically stabilized by hydrogen bonds between backbone atoms. Primary structure refers to the linear sequence of amino acids, tertiary structure refers to the overall 3D conformation of the polypeptide due to interactions between side chains, and quaternary structure refers to the arrangement of multiple polypeptide subunits in a protein complex. "Gamma structure" is not a recognized term in protein structure.

The Alpha Helix and Beta Pleated Sheet Are Examples of