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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 relationship between the saturation of hemoglobin with oxygen (HbO2) and the partial pressure of oxygen (pO2) in the blood. On the y-axis, we plot the percentage of hemoglobin saturation, while on the x-axis, we plot the partial pressure of oxygen. 2. **Understanding the Sigmoidal Pattern**: The oxygen dissociation curve exhibits a sigmoidal (S-shaped) pattern due to the cooperative binding nature of hemoglobin. This means that as one molecule of oxygen binds to hemoglobin, it increases the affinity of hemoglobin for additional oxygen molecules. ...
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