If the partial pressure of oxygen in the blood decreases from 40 mmHg to 20 mmHg, what will occur to the amount of oxygen bound to hemoglobin?
a) Hemoglobin will quickly bind oxygen, increasing its percent saturation.
b) Hemoglobin will quickly unload the oxygen that it is carrying, increasing its percent saturation.
c) Hemoglobin will quickly unload the oxygen that it is carrying, decreasing its percent saturation.
d) Hemoglobin will quickly bind oxygen, decreasing its percent saturation.
Answer: c) Hemoglobin will quickly unload the oxygen that it is carrying, decreasing its percent saturation.
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