Chemical structure of hemoglobin is: (A) Has 2 polypeptide chains with 4 heme, (B) Has 4 polypeptide chains with 2 heme, (C) Has 4 polypeptide chains with 4 heme, (D) None of the above
Answer is C. Hemoglobin is a protein with a molecular weight of 64,450.Hemoglobin is a globular molecule made up of four subunits . Each subunit contains a heme moiety conjugated to a polypeptide. Ref: Ganong's Review of Medical Physiology Twenty-Third Edition Page No: 523