Bohr effect is described as: September 2009
Correct Answer: Decrease in O2 affinity of hemoglobin when the pH of blood falls
Description: Ans. D: Decrease in O2 affinity of hemoglobin when the pH of blood fallsThe decrease in O2 affinity of hemoglobin when the pH of blood falls is called the Bohr effect and is closely related to the fact that deoxygenated hemoglobin (deoxyhemoglobin) binds H+ more actively than does oxyhemoglobin. The pH of blood falls as its CO, content increases, so that when the PCO2 rises, the curve shifts to the right and the P5,, rises.
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