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% Hb saturation % Hb saturation P Effect of pH Effect of temperature The above illustrations represent the influence of pH an

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Answer #1

Out of the five options, three are correct. Correct options are

A fever would encourage hemoglobin to release oxygen.

As the body temperature declines the release of oxygen from hemoglobin declines.

Hemoglobin would tend to increase release of oxygen as the pH declines.

Explanation: -

Here, in both the graph, pressure of O2 is plotted against % hemoglobin saturation at different pH and temperatures.

To answer this type of question we must remember that, more the curve is closer to the y - axis (% hemoglobin saturation) more is the affinity of hemoglobin towards oxygen. Because, the closer is the curve towards x-axis, it will attain the 50 % saturation at lower pressure of oxygen. Farther the curve from the y-axis, lesser is the affinity means for hemoglobin it will be easier to release the oxygen.

Hence, above stated options are correct and rest are incorrect.

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