Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.
Answer: (C) High pO2, low pCO2, less H+, lower temperature. Answer: (c) High pO2, low pCO2, less H+, lower temperature Solution: Oxyhaemoglobin forms at the alveoli where the factors are all favourable: high pO2, low pCO2, lesser H+ concentration and lower temperature.
- A.High pO2, high pCO2, less H+, higher temperature
- B.Low pO2, low pCO2, more H+, higher temperature
- C.High pO2, low pCO2, less H+, lower temperature✓
- D.Low pO2, high pCO2, more H+, higher temperature
Correct Answer
(C) High pO2, low pCO2, less H+, lower temperature
Solution & Explanation
Answer: (c) High pO2, low pCO2, less H+, lower temperature Solution: Oxyhaemoglobin forms at the alveoli where the factors are all favourable: high pO2, low pCO2, lesser H+ concentration and lower temperature. The opposite set (low pO2, high pCO2, more H+, higher temperature) favours dissociation of O2 at the tissues, so option (c) is correct. NCERT: Ch 14, p.189, line 23 — "high pO2, low pCO2, lesser H+ concentration and lower temperature, the factors are all favourable"