Collagen fibers are formed by the twisting of three polypeptide chains. Which structural level is represented by the individual twisting of these three separate chains together?
Q1. Collagen fibers are formed by the twisting of three polypeptide chains. Which structural level is represented by the individual twisting of these three separate chains together?
Answer: Quaternary structure
Explanation: When three separate polypeptide chains interact to form a functional unit, it is quaternary. Tertiary describes the folding of a single chain.