Hemoglobin is a protein composed of two pairs of polypeptide chains. What is the highest level of protein structure represented by hemoglobin?
A) primary
B) secondary
C) tertiary
D) quaternary
E) molecular

Question

Quizplus · Accepted Answer

Hemoglobin is composed of two pairs of polypeptide chains, each of which has a specific three-dimensional shape determined by the sequence of amino acids in the chain. The way these polypeptide chains interact with each other to form the functional hemoglobin molecule represents the highest level of protein structure, known as quaternary structure.

Hemoglobin Is a Protein Composed of Two Pairs of Polypeptide