Question

Identify the wrong statement with reference to transport of oxygen.

• A. Partial pressure of CO₂ can interfere in O, binding with haemoglobin
• B. Higher H concentration in alveoli favours the formation of oxyhaemoglobin
• C. Low pCO₂, in alveoli favours the formation of oxyhaemoglobin of oxygen with haemoglobin is mainly related to
• D. Binding partial pressure of O₂

Answer 1

Answer:

B. Higher H concentration in alveoli favours the formation of oxyhaemoglobin

• Partial pressure of CO₂ interferes with oxygen binding to hemoglobin via the Bohr effect, where increased CO₂ leads to decreased affinity of hemoglobin for oxygen, facilitating oxygen release.

• Low pCO₂ in alveoli favors the formation of oxyhaemoglobin by increasing hemoglobin's oxygen affinity, promoting oxygen loading in the lungs.

• The binding of oxygen with hemoglobin is mainly related to the partial pressure of O₂, determining the loading and unloading of oxygen.

• However, a higher concentration of hydrogen ions (H⁺) actually lowers the affinity of hemoglobin for oxygen (Bohr effect), favoring oxygen release to tissues rather than oxyhaemoglobin formation in alveoli.