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Breathing and Exchange of Gases question

2011 · Q2
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Breathing and Exchange of Gases question

2011 · Q2

NEETBiologyBreathing and Exchange of GasesMCQ+4 / −1
A large proportion of oxygen remains unused in the human blood even after its uptake by the body tissues. This O2
  1. A
    acts as a reserve during muscular exercise
  2. B
    raises the pCO2 of blood to 75 mm of Hg.
  3. C
    is enough to keep oxyhaemoglobin saturation at 96%
  4. D
    helps in releasing more O2 to the epithelial tissues.
View written solutionFree

Correct answer: A

A large portion of oxygen is left unused in the human blood even after its uptake by the body tissues. This O2 acts as a reserve during muscular exercise.

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