Oxygen is carried by the blood
A)dissolved in the plasmA.
B)bound to the iron of hemoglobin in red blood cells.
C)bound to the protein of hemoglobin in red blood cells.
D)Both dissolved in the plasma and bound to the iron of hemoglobin in red blood cells

Question

Quizplus · Accepted Answer

Oxygen is carried by the blood both dissolved in the plasma and bound to the iron of hemoglobin in red blood cells. The dissolved oxygen in plasma contributes to around 2% of the total oxygen-carrying capacity, while around 98% is bound to hemoglobin in red blood cells. Hemoglobin is a protein that contains iron, and it forms a reversible bond with oxygen, hence allowing oxygen to be carried to body tissues.

Oxygen Is Carried by the Blood