GROSS ANATOMY

Detailed explanation-1: -About 70 percent of your body’s iron is found in the red blood cells of your blood called hemoglobin and in muscle cells called myoglobin. Hemoglobin is essential for transferring oxygen in your blood from the lungs to the tissues. Myoglobin, in muscle cells, accepts, stores, transports and releases oxygen.

Detailed explanation-2: -The hemoglobin molecule has four binding sites for oxygen molecules: the iron atoms in the four heme groups. Thus, each Hb tetramer can bind four oxygen molecules.

Detailed explanation-3: -Oxygen binds directly to the iron (Fe) atom in hemoglobin. Oxygen binds to the four binding sites (four iron atoms in four heme groups) in the hemoglobin molecule.

Detailed explanation-4: -Amino Acids, Peptides, and Proteins It consists of two pairs of different proteins, designated the and chains. There are 141 and 146 amino acids in the and chains of hemoglobin, respectively. As in myoglobin, each subunit is linked covalently to a molecule of heme. Thus, hemoglobin binds four O2 molecules.

Detailed explanation-5: -Answer and Explanation: The part of the hemoglobin molecule that binds to oxygen is called the heme group. A heme group is a prosthetic group in the hemoglobin protein. The most important part is an iron located in the centre.