Solution:Concept- Since each hemoglobin monomer is a globular protein with an embedded heme group, the name hemoglobin is derived from the words heme and globin.
One iron atom exists in each group, and it has the ability to bind oxygen molecules thanks to ion-induced dipole forces. The oxygen from the lungs or gills is transported to the rest of the body, or to the tissue, via hemoglobin in the blood. It allows aerobic respiration, which in turn supplies energy for the organism's activity throughout metabolism. Erythrocytes, also known as red blood cells, contain hemoglobin.
Hence, the correct answer is option 1 - Globin.