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Transport of Carbon Dioxide

CO2 dissociat...

Question

$C O_{2}$ dissociates from carbaminohaemoglobin when?

A

P_{C O_{2}}

is high and

P_{O_{2}}

is low

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B

P_{O_{2}}

is high and

P_{C O_{2}}

is low

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C

P_{C O_{2}}

and

P_{O_{2}}

are equal

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D

None of these

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Solution

The correct option is B $P_{O_{2}}$ is high and $P_{C O_{2}}$ is low
When carbon dioxide binds to hemoglobin, a molecule called carbainohemoglobin is formed. High Po_{2} and low Pco_{2} in the lung blood capillaries favors separation of carbon dioxide from cabraminohemoglobin.
So, option B is the correct option.

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Similar questions

$C O_{2}$ dissociates from carbamino haemoglobin when

(a) $p C O_{2}$ is high and $p O_{2}$ is low

(b) $p O_{2}$ is high and $p C O_{2}$ is low

(c) $p C O_{2}$ and $p O_{2}$ are equal

(d) None of the above

C O_{2}

dissociates from carbamino-haemoglobin when:

In the alveoli, dissociation of

C O_{2}

from carbamino-haemoglobin takes place.

Reason: In the alveoli

P_{c o_{2}}

P_{o_{2}}

What will be the pO₂ and pCO₂ in the atmospheric air compared to those in the alveolar air?

(i) pO₂ lesser, pCO₂ higher

(ii) pO₂ higher, pCO₂ lesser

(iii) pO₂ higher, pCO₂ higher

(iv) pO₂ lesser, pCO₂ lesser

P o_{2}

P c o_{2}

in the systemic arteries?

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