What is the effect of $p C O_{2}$ on oxygen transport?

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Solution

$p C O_{2}$ plays an important role in the transportation of oxygen. Oxygen is transported in the blood as oxyhaemoglobin and oxygen dissociate from it at the tissues. At the alveolus, the low $p C O_{2}$ and high $p O_{2}$ favours the formation of oxyhaemoglobin. At the tissues, the high $p C O_{2}$ and low $p O_{2}$ favours the dissociation of oxygen from oxyhaemoglobin. Hence, the affinity of haemoglobin for oxygen is enhanced by the decrease of $p C O_{2}$ in blood.

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Which of the following has the greatest effect on ability of blood to transport oxygen

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

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