Under what condition does more oxygen combine with hemoglobin? A) at very high altitudes B) when the partial pressure of O₂is low C) when cooperativity between oxygen and hemoglobin is low D) when the partial pressure of O₂is high E) in the body's metabolically active sites

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Quizplus · Accepted Answer

Hemoglobin has a higher affinity for oxygen when the partial pressure of oxygen is high. This allows more oxygen to bind with hemoglobin and be transported throughout the body. This is often the case at sea level or at normal atmospheric pressures. Conversely, at very high altitudes or when the partial pressure of oxygen is low, hemoglobin has a lower affinity for oxygen and may not bind to it as readily.

Under What Condition Does More Oxygen Combine with Hemoglobin