True statement about hemoglobin is ?: (A) Each hemoglobin molecule is made of 4 polypep tides of each subunit, (B) Two alpha and two beta subunits having a 02 attached to each subunit, (C) Each hemoglobin molecule binds to only one 02 molecule, (D) Each hemoglobin has one heme molecule
Answer is A. Ans. is 'a' i.e., Each hemoglobin molecule is made of 4 polypeptides of each subunit