Question Detail
Question
The unique three-dimensional structure of a polypeptide is referred to as _____
Correct Answer
Option C is the correct answer.
Detailed Explanation
The tertiary structure of a protein refers to its overall three-dimensional conformation, resulting from interactions between the side chains (R groups) of the amino acids. The primary structure is the linear sequence, secondary is local folding (alpha helices, beta sheets), and quaternary is the arrangement of multiple polypeptide subunits.
Hint
Which level of protein structure describes the complete 3D shape of a single polypeptide chain?