Two or more polypeptides chains combine to form a complex structure called a ________.
A) primary structure
B) beta-pleated sheet
C) secondary structure
D) tertiary structure
E) quaternary structure

Question

Quizplus · Accepted Answer

The quaternary structure is the arrangement of multiple polypeptide chains (subunits) into a single, functional protein complex. The other choices refer to different levels of protein structure but do not involve the combination of multiple polypeptide chains.

Two or More Polypeptides Chains Combine to Form a Complex