Chemical structure of hemoglobin is
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
Has 2 polypeptide chains with 4 heme
Has 4 polypeptide chains with 2 heme
Has 4 polypeptide chains with 4 heme
None of the above
Cardiovascular system