Oxygen moves from alveoli to the bloodstream

a. because the concentration 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. because of its attraction to hemoglobin.
d. to counter the high concentration of CO2 in the
blood.
e. because of all of these.


Answer: a

Biology & Microbiology

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