Which of the Following Is True of the Oxygen Dissociation

question 3

Multiple Choice

Which of the following is true of the oxygen dissociation curve?

• A)The normal partial pressure of oxygen (PO2) at which hemoglobin is 50% saturated is 20 mm Hg.
• B)A shift to the right or left in response to blood pH is called the Bohr effect.
• C)A shift to the left results in lower oxygen affinity.
• D)A shift to the right results in less effective delivery of oxygen to tissue.

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