MICROANATOMY

Detailed explanation-1: -Hemoglobin is the oxygen-carrying protein that is found within all RBCs. It picks up oxygen where it is abundant (the lungs) and drops off oxygen where it is needed around the body. Hemoglobin is also the pigment that gives RBCs their red color.

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: -Red blood cells contain a protein called hemoglobin, which is responsible for carrying oxygen.

Detailed explanation-4: -Red blood cells contain a protein called haemoglobin, which carries oxygen from your lungs to all parts of your body. Haemoglobin is what makes your blood red.