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The factor which does not affect the rat...

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

A

solubility of gases

B

thickness of the membranes

C

pressure gradient

D

reactivity of the gases.

Text Solution

Verified by Experts

The correct Answer is:
D
`O_(2)` and `CO_(2)` are exchanged in the alveoli by simple diffusion. The factors that affect the diffusion are pressure gradient of the gases, solubility of the gases and the thickness of the membranes involved in diffusion.
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NCERT FINGERTIPS-BREATHING AND EXCHANGE OF GASES-Breathing And Exchange Of Gases
  1. Among the following the partial pressure of oxygen is maximum in

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

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

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

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  5. Which of the following statement is correct?

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

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

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

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

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

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  11. The oxygen dissociation curve is

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

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  13. The given graph shows an oxygen dissociation curve for haemoglobin. ...

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  14. When temperature decrease, oxy-Hb curve becomes

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  15. Which of the following factors is not favourable for the formation of ...

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  16. Consider for following four statements and select the correct option s...

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  17. After taking a long deep breath we do not respire for some seconds due...

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  18. A large proportion of oxygen remain unused in the human blood even aft...

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  19. In the tissues, high concentrations of carbon dioxide

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  20. Fetal haemoglobin has X affinity for oxygen than that of mother's haem...

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