Most oxygen is transported in the blood bonded to:
A)iron in the plasma
B)RBC membranes
C)hemoglobin in the plasma
D)hemoglobin in the RBCs

Question

Quizplus · Accepted Answer

Hemoglobin in the RBCs is the best choice as it is the main protein that binds with oxygen in the blood, allowing it to be transported to tissues throughout the body. Iron in the plasma is not a feasible option as iron is not capable of binding with oxygen in the blood. While some oxygen may be dissolved in the plasma, this is not the primary way oxygen is transported. Hemoglobin in the plasma is also not a feasible option as hemoglobin is found inside red blood cells, not in the plasma.

Most Oxygen Is Transported in the Blood Bonded To