The Role of Hemoglobin in the Red Blood Cell Is

Question

The role of hemoglobin in the red blood cell is to carry
A) oxygen
B) carbon dioxide
C) hormones
D) both A and B

Accepted Answer

Hemoglobin in red blood cells binds to both oxygen and carbon dioxide. It picks up oxygen from the lungs and delivers it to tissues throughout the body, then picks up carbon dioxide wastes from those tissues and brings them back to the lungs to be exhaled. It does not carry hormones.