<prompt> False statement about hemoglobin structure?Hb has 2 polypeptideIron is present in ferrous stateHb structurally similar to myoglobinFerrous ions are in porphyrin rings  <response>: Each hemoglobin molecule is made up of:- i Non-protein part, i.e. heme; and ii Globin, which has 4 polypeptide chains 2 pairs of similar polypeptide chains.Iron of hemoglobin is in the ferrous state which lies in the center of the porphyrin ring.Myoglobin and the β-subunits of hemoglobin share almost identical structures. 