Biology / Bio 3163 · Atom · ~20 seconds
The Oxygen-Hemoglobin Dissociation Curve
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The oxygen-hemoglobin dissociation curve plots hemoglobin's oxygen saturation against oxygen partial pressure, forming an S-shape produced directly by cooperative binding, per Bio 3161.
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The curve's steep midsection lets a small partial-pressure drop release a large share of bound oxygen at active tissue.
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A curve shifted rightward means hemoglobin releases oxygen more readily, not that it carries less overall.