MICROANATOMY

Detailed explanation-1: -Hemoglobin (Heme + Globin) The protein hemoglobin is a molecule which is responsible for carrying almost all of the oxygen in the blood.

Detailed explanation-2: -Hemoglobin contains iron, which allows it to pick up oxygen from the air we breathe and deliver it everywhere in the body. You can think of hemoglobin as the iron ("heme"), oxygen transport protein, ("globin") found in red blood cells. It’s the hemoglobin that gives red blood cells their color, too.

Detailed explanation-3: -Globin is a protein of 574 amino acids in four polypeptide chains. Each of those chains is associated with a heme group. Each heme group surrounds an atom of iron, and each iron atom can loosely bind an oxygen atom. Binding up to four oxygen molecules, the hemoglobin forms the compound called oxyhemoglobin.