What is the name of the respiratory pigment found in human erythrocytes that reversibly binds oxygen to transport it from the lungs to body tissues?

💡 Solution & Explanation

Hemoglobin is an iron-containing metalloprotein in red blood cells specialized for oxygen transport throughout the human circulatory system. Myoglobin stores oxygen within muscle tissues, while hemocyanin is a copper-based respiratory protein found in mollusks and arthropods. Each hemoglobin tetramer can bind up to four oxygen molecules cooperatively.