Which of the following causes a rightward shift of oxygen–haemoglobin dissociation curve?

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High pO₂

High pCO₂

Low $H^{+}$ concentration

Low pCO₂

answer is B.

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Detailed Solution

The oxygen-hemoglobin dissociation curve shows the relationship between the partial pressure of oxygen (PO₂) and the hemoglobin's affinity for oxygen. A right shift in the curve indicates a decrease in hemoglobin's affinity for oxygen, which means hemoglobin will release oxygen more readily to the tissues at a given partial pressure of oxygen.

A right shift in the oxygen-hemoglobin dissociation curve occurs in certain conditions and situations that impact the oxygen-carrying capacity of hemoglobin. Some factors that cause a right shift in the curve include:

Decreased pH, Increased Temperature, Increased Carbon Dioxide, Increased 2,3-DPG, decreased Oxygen.

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