1. Binding of oxygen with haemoglobin is mainly related to partial pressure of O₂ . 2. Partial pressure of CO₂ can interfere with O₂ binding with haemoglobin. 3. Higher H^+ conc. in alveoli favours the formation of oxyhaemoglobin. 4. Low pCO₂ in alveoli favours the formation of oxyhaemoglobin.

Topic: Breathing and respiration: mechanism, exchange and transport of gases, volumes, disorders· Human Physiology

Identify the wrong statement with reference to transport of oxygen.

1. Binding of oxygen with haemoglobin is mainly related to partial pressure of \(O_2\).

2. Partial pressure of \(CO_2\) can interfere with \(O_2\) binding with haemoglobin.

3. Higher \(H^+\) conc. in alveoli favours the formation of oxyhaemoglobin.

4. Low \(pCO_2\) in alveoli favours the formation of oxyhaemoglobin.

Doubtly Asked 30 Oct 2026 NEET UG 2020 Practice test neet Save WhatsApp Report

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Answer: 3. Higher \(H^+\) conc. in alveoli favours the formation of oxyhaemoglobin.

Key idea: Oxygen binding to haemoglobin is favoured by high pO₂, low pCO₂, low H⁺ (higher pH) and lower temperature, as in the alveoli.

Statement 3 says higher H⁺ concentration in the alveoli favours oxyhaemoglobin formation, which is wrong: alveoli have low H⁺. Higher H⁺ shifts the curve to the right and releases O₂ in the tissues. Statements 1, 2 and 4 are correct.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Identify the wrong statement with reference to transport of oxygen.

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