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The exchange of gases in the alveoli of ...

The exchange of gases in the alveoli of the lungs takes place by

A

passive transport

B

active transport

C

osmosis

D

simple diffusion.

Text Solution

Verified by Experts

The correct Answer is:
D
The exchange of gases in the alveoli of the lungs takes place by simple diffusion. The exchange of gases between the alveoli and blood in the lung is the result of difference in partial pressure of respiratory gases.
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NCERT FINGERTIPS-BREATHING AND EXCHANGE OF GASES-Breathing And Exchange Of Gases
  1. Match column I with column II and select the correct option from the c...

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  2. Consider the following four statements (I - iv) and select the correct...

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  3. The exchange of gases in the alveoli of the lungs takes place by

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  4. The given figure shows the diagrammatic represtation of exchange of ga...

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  5. Consider the following statement each with two blanks. (i) Diaphragm...

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  6. Which of the following would have the same O(2) content?

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  7. What is the approximate normal composition of alveolar air ?

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  8. The CO(2) content by volume, in the atmospheric air is about

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  9. Among the following the partial pressure of oxygen is maximum in

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  10. In lungs, the air is separated from the venous blood through

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  11. The factor which does not affect the rate of alveolar diffusion is

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  12. Besides RBC, blood plasma also carries O(2) in solution. The percentag...

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  13. Which of the following statement is correct?

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  14. Which of the following statement is true about RBCs in humans?

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  15. The carbon dioxide is transported via blood to lungs mostly

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  16. Blood carries the CO(2) in three forms. The correct percentages of CO(...

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  17. Bluk of oxygen diffuses from the plasma into the red blood corpuscles ...

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  18. One haemoglobin carries how many molecules of O(2) ?

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  19. The oxygen dissociation curve is

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  20. Which of the following is incorrect about the given graph ?

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