The primary structure of a protein is
A) an alpha helix or a pleated sheet.
B) the amino acid sequence of the polypeptide chain.
C) composed of two or more polypeptide chains.
D) maintained by hydrogen bonds.

Question

Quizplus · Accepted Answer

The primary structure of a protein refers to the linear sequence of amino acids in the polypeptide chain. It is the first level of protein structure and determines the overall shape and function of the protein. The other choices describe higher levels of protein structure, such as secondary structure (A), quaternary structure (C), and the type of bonds involved in maintaining structure (D).

The Primary Structure of a Protein Is