Oxygen moves from alveoli to the bloodstream ____. A) because the partial pressure of oxygen is greater in alveoli than in the blood B) mainly due to the activity of carbonic anhydrase in the red blood cells C) against a concentration gradient D) to equal the concentration of CO₂ in the blood E) by active transport

Question

Quizplus · Accepted Answer

Oxygen moves from areas of higher partial pressure to areas of lower partial pressure, and since the partial pressure of oxygen is greater in the alveoli than in the blood, oxygen will move from the alveoli to the bloodstream via diffusion.

Oxygen Moves from Alveoli to the Bloodstream ____