When proteins are made up of several polypeptide chains,the arrangement of these chains is referred to as:
A) primary structure
B) secondary structure
C) tertiary structure
D) quaternary structure

Question

Quizplus · Accepted Answer

Quaternary structure refers to the arrangement of multiple polypeptide chains to form a functional protein. Therefore, if a protein is made up of several polypeptide chains, its arrangement would be referred to as quaternary structure. Primary structure refers to the linear sequence of amino acids, secondary structure refers to local folding patterns such as alpha helices and beta sheets, and tertiary structure refers to the overall 3D shape of a single polypeptide chain.

When Proteins Are Made Up of Several Polypeptide Chains,the Arrangement