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Define oxygen dissociation curve. Can yo...

Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?

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### Step-by-Step Solution: 1. **Definition of Oxygen Dissociation Curve**: - The oxygen dissociation curve is a graphical representation that illustrates the percentage saturation of hemoglobin (oxyhemoglobin) with oxygen at various partial pressures of oxygen (pO2). It shows how readily hemoglobin acquires and releases oxygen under different conditions. 2. **Understanding the Sigmoidal Pattern**: - The oxygen dissociation curve exhibits a sigmoidal (S-shaped) pattern. This shape is primarily due to the cooperative binding of oxygen molecules to hemoglobin. - When the first molecule of oxygen binds to hemoglobin, it induces a conformational change in the hemoglobin structure. This change increases the affinity of hemoglobin for the second oxygen molecule. ...
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