The More Oxygen-Depleted a Cell Is, the Faster It Can

question 63

Multiple Choice

The more oxygen-depleted a cell is, the faster it can pick up oxygen from hemoglobin. Why is this?

• A) Hemoglobin doesn't bind to oxygen very strongly.
• B) If oxygen is low, carbon dioxide is high, and that interferes with the ability of the hemoglobin to hold onto oxygen.
• C) At low oxygen levels, hemoglobin releases oxygen more easily.
• D) At high oxygen levels hemoglobin hangs on tight to oxygen.
• E) There are more red blood cells in the area.

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