Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli?
Answer: (A) High pO2 and lesser H+ concentration. Answer: (a) High pO2 and lesser H+ concentration Solution: In the alveoli the conditions favouring formation of oxyhaemoglobin are high pO2, low pCO2, lesser H+ concentration and lower temperature.
- A.High pO2 and lesser H+ concentration✓
- B.Low pCO2 and high H+ concentration
- C.Low pCO2 and high temperature
- D.High pO2 and high pCO2
Correct Answer
(A) High pO2 and lesser H+ concentration
Solution & Explanation
Answer: (a) High pO2 and lesser H+ concentration Solution: In the alveoli the conditions favouring formation of oxyhaemoglobin are high pO2, low pCO2, lesser H+ concentration and lower temperature. So 'High pO2 and lesser H+ concentration' is correct. The other options pair in unfavourable factors (high pCO2, high H+, or high temperature) that promote dissociation, not formation. NCERT: Ch 14, p.189, line 23 — "high pO2, low pCO2, lesser H+ concentration and lower temperature, the factors are all favourable"