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Assertion : A rise in PCO(2), H^(+) ions...

Assertion : A rise in `PCO_(2), H^(+)` ions and temperature shifts the `HbO_(2)` dissociation curve to right.
Reason : A rise in `PCO_(2)` or fall in pH decreases oxygen affinity for haemoglobin.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true and reason is not the correct explanation of assertion

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
A shift to the right of oxygen dissociation curve indicates dissociation of oxygen from haemoglobin. In the tissues, low `pO_(2)`, high `pCO_(2)`, high `H^(+)` concentration (low pH or acidity) and higher temperature favour dissociation of oxygen from the oxyhaemoglobin.
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