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Question

Decrease in pH causes the oxygen dissociation curve of haemoglobin to shift to

A
left
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B
right
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C
remain unchanged
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D
oscillate erratically
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Solution

The correct option is B right
The Oxygen dissociation curve is a graph that plots the proportion of haemoglobin in its oxygen-laden saturated form on the vertical axis against the partial pressure of oxygen on the horizontal axis.

The Oxygen dissociation curve has a sigmoid shape because of the co-operative binding of oxygen to the haemoglobin.

The Oxygen dissociation curve can be shifted to the right or to the left by a variety of factors.

A decrease in the pH shifts the curve to the right, while, an increase in the pH shifts the curve to the left.

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