Q.

Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli             [2024]

1 High pO2 and High pCO2  
2 High pO2 and Lesser H+ concentration  
3 Low pCO2 and High H+ concentration  
4 Low pCO2 and High temperature  

Ans.

(2)

Binding of oxygen with haemoglobin is related to partial pressure of O2, partial pressure of CO2, hydrogen ion concentration and temperature. In the alveoli, high pO2, low pCO2, lesser H+ concentration and lower temperature are favourable factors for the formation of oxyhaemoglobin.