When polymerization of a protein is complete, but a protein is still completely linear, what is the highest level of structure in the protein?
A) primary
B) secondary
C) tertiary
D) quaternary

Question

Quizplus · Accepted Answer

The primary structure of a protein refers to its linear sequence of amino acids. Even if polymerization is complete, without any folding or bonding, the protein would still only have a primary structure. The secondary structure refers to local folding patterns (such as alpha helices and beta sheets), the tertiary structure refers to the 3D shape of a single polypeptide chain, and the quaternary structure refers to the arrangement of multiple protein subunits.

When Polymerization of a Protein Is Complete, but a Protein