First slide

Transport of Gases

Question

Oxygen dissociation curve shifts right under which of the following conditions?

Easy

A

High partial pressure of oxygen
B

Low partial pressure of carbon dioxide
C

Low temperature
D

Low pH

Solution

The curve shifts right at the tissues, where the oxygen is dissociated. Low pH (high H⁺concentration) favours dissociation of oxygen.
In the tissues, where low pO₂, high pCO₂, high H⁺ concentration and higher temperature exist, the conditions are favourable for dissociation of oxygen from the oxyhaemoglobin.

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