Which of These Is Demonstrated by the Oxygen-Hemoglobin Dissociation Curve

question 32

Multiple Choice

Which of these is demonstrated by the oxygen-hemoglobin dissociation curve?

• A)The greater the P_O2 of the blood,the greater the dissociation of O₂ from hemoglobin.
• B)At normal resting systemic arterial P_O2 ,hemoglobin is almost 100% saturated with oxygen.
• C)At normal resting systemic venous P_O2 ,only about 75% of the hemoglobin is in the form of deoxyhemoglobin.
• D)More additional oxygen binds to hemoglobin when going from a P_O2 of 60 to 100 mmHg,than is added when going from a PO2 of 40 to 60 mmHg.
• E)As P_O2 increases,the saturation of hemoglobin with oxygen increases linearly.

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