AP BIOLOGY

Detailed explanation-1: -Haemoglobin is a protein responsible for transporting oxygen in the blood of vertebrates. Its molecule comprises of four subunits, each containing an iron atom bound to a haem group. Haemogobin gives the red colour to the blood.

Detailed explanation-2: -Haemoglobin is the iron-containing pigment that enables red blood cells to carry high concentrations of oxygen to the tissues.

Detailed explanation-3: -Haemoglobin is the red pigment which carries oxygen in the blood. RBC contain haemoglobin in it. Haemoglobin is an iron-containing protein that carries oxygen from the lungs to the body.

Detailed explanation-4: -Hemoglobin itself is a compound of a colorless protein, globin, and an iron porphyrin pigment. In general the pigments formed by the combination of iron with the various porphyrins are called hemes.

Detailed explanation-5: -Hemoglobin is a two-way respiratory carrier, transporting oxygen from the lungs to the tissues and facilitating the return transport of carbon dioxide. In the arterial circulation, hemoglobin has a high affinity for oxygen and a low affinity for carbon dioxide, organic phosphates, and hydrogen and chloride ions.