Oxygen dissociation curve shifts to the right by all of the following except_____________?
Correct answer: A. Rise in pH
- A. Rise in pH
- B. Rise in carbon dioxide tension
- C. Rise in temperature
- D. Rise in H+ ion
Explanation
A rise in temperature, CO₂, or H⁺ shifts the curve rightward and promotes oxygen unloading. A rise in pH shifts it leftward by increasing haemoglobin’s oxygen affinity.
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