2. Solved Papers
  3. NEET
  4. Biology

NEET Biology NEET PYQ-Breathing and Exchange Of Gases

  • question_answer
    The exchange of gases in the alveoli of the lungs takes place by: [AIPMT 1998]

    A) osmosis

    B) simple diffusion

    C) passive transport

    D) active transport

    Correct Answer: B

    Solution :

    [B] Oxygen diffuses from alveoli to deoxygenated blood, and CO2 diffuses from deoxygenated blood to alveoli by simple diffusion. Diffusion is defined as, the flow of the substance (gases) from a region of their higher concentration to a region of lower concentration.


You need to login to perform this action.
You will be redirected in 3 sec spinner