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NEETZoologyBreathing and Exchange of Gases

What conditions shift the graph to the left?

Options

  1. ADecreased pH
  2. BIncreased pCO2
  3. CIncreased temperature
  4. DDecreased H+ concentration

Correct answer

B. Increased pCO2

Step-by-step solution

This curve is called the Oxygen dissociation curve (Figure 17.5) and is highly useful in studying the effect of factors like, H+ concentration, etc., on binding of O2 with haemoglobin. In the alveoli, where there is high , low , lesser H+ concentration and lower temperature, the factors are all favourable for the formation of oxyhaemoglobin, whereas in the tissues, where low , high , high H+ concentration and higher temperature exist, the conditions are favourable for dissociation of oxygen from the oxyhaemoglobin.

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