AIPMT 2011 Biology Solved Paper

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Question : 46 of 100

Marks: +1, -0

A large proportion 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
raise the pCO2 of blood to 75‌mm of Hg.
is enough to keep Oxyhaemoglobin saturation at 96%
helps in releasing more O2 to the epithelial tissues.

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