The Oxygen Exchange Between the Red Blood Cells and the Alveoli

Multiple Choice

The oxygen exchange between the red blood cells and the alveoli is driven by diffusion. This diffusion is due to the

A) lower amount of oxygen found in the red blood cells.
B) higher amount of oxygen found in the red blood cells.
C) lower amount of carbon dioxide in the red blood cells.
D) equal concentration of oxygen between the red blood cells and the alveoli.