Question

The rate at which oxygen moves from the alveoli of our lungs into our blood

• A. Depends on the difference in oxygen concentration between the alveoli and the blood.
• B. Depends on the color of the alveoli.
• C. Depends on the availability of energy to transport gases across the membrane.
• D. None of the above.

Answer 1

The correct option is A Depends on the difference in oxygen concentration between the alveoli and the blood.

The rate at which oxygen moves from the alveoli of our lungs into our blood depends on the difference in oxygen concentration between the alveoli and the blood. More the oxygen absorbed by our lungs, more it is absorbed into the blood and utilized by body muscles.

Hence the correct option is A.