Below Is a Fractional Saturation Curve for O₂ Binding to Adult

question 111

Multiple Choice

Below is a fractional saturation curve for O₂ binding to adult hemoglobin. Assume that curve Y represents a system at pH 7.4 and with a normal physiological level of 2,3-BPG. Curve X represents a system that

• A) is at pH 7.4 with a higher than normal physiological level of 2,3-BPG.
• B) has a higher pH with a normal physiological level of 2,3-BPG.
• C) has a lower pH with a normal physiological level of 2,3-BPG.
• D) is at pH 7.4 with a normal physiological level of 2,3-BPG but with an increased level of CO₂.

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