The amount of oxygen bound (or released)by hemoglobin depends primarily on which of the following?
A) of its surroundings
B) of its surroundings
C) the carbonic anhydrase available
D) of its surroundings
E) the effect of the chloride shift

Question

The amount of oxygen bound (or released)by hemoglobin depends primarily on which of the following?
A) of its surroundings 
B) of its surroundings 
C) the carbonic anhydrase available 
D) of its surroundings 
E) the effect of the chloride shift

Quizplus · Accepted Answer

The amount of oxygen that is bound (or released) by hemoglobin depends primarily on the partial pressure of oxygen (PO2) in its surroundings. Specifically, hemoglobin binds oxygen when the PO2 is high (e.g., in the lungs) and releases oxygen when the PO2 is low (e.g., in the tissues). The other factors listed may play a secondary or modulatory role in this process, but they are not the primary determinant of the amount of oxygen bound or released by hemoglobin.

The Amount of Oxygen Bound (Or Released)by Hemoglobin Depends Primarily