Hemoglobin differs from myoglobin because
A) it does not have a heme group.
B) it is a tetramer, whereas myoglobin is a single polypeptide chain.
C) it does not contain any helical regions.
D) it contains more b-pleated sheet structure.

Question

Quizplus · Accepted Answer

Hemoglobin is a tetramer composed of two alpha and two beta polypeptide chains, while myoglobin is a single polypeptide chain. Both proteins contain a heme group and have helical regions, so options A and C are incorrect. Option D is also incorrect as myoglobin contains more alpha-helix structure than beta-pleated sheet structure.

Hemoglobin Differs from Myoglobin Because