Biochemistry True statement about hemoglobin is A Each hemoglobin molecule is made of 4 polypeptides of each subunit B Two alpha and two beta subunits having a O2 attached to each subunit C Each hemoglobin molecule binds to only one O2 molecule D Each hemoglobin has one heme molecule 💡 Explanation True statement about hemoglobin is ✓ Correct Answer: A. Each hemoglobin molecule is made of 4 polypeptides of each subunit