Question

The majority of the protein inside a red blood cell (erythrocyte) is:

a. albumin
b. hemoglobin
c. fibrinogen
d. immunoglobulin
e. porphyrin

Answer 1

Answer: Hemoglobin

Explanation: Hemoglobin is a protein very rich in iron found in red blood cells and is responsible for the transportation of Oxygen from the lungs to the whole body. Oxygen binds to the hemoglobin in red blood cells and the red pigmentation of blood that is highly oxygenated is due to the hemoglobin content found in RBC's.