What is the Most Important Role of Hemoglobin

Question

What is the most important role of hemoglobin?
A) Transport of bilirubin
B) Regulation of blood pH
C) Regulation of blood glucose
D) Transport of oxygen

Accepted Answer

The most important role of hemoglobin is the transport of oxygen from the lungs to the body tissues. Hemoglobin binds to oxygen in the lungs and then releases it in the tissues where it is needed for cellular respiration.