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Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBreathing and Exchange of Gases3 Marks
Question
What is the effect of pCO2 on oxygen transport?
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Answer

  • pCO2 plays an important role in oxygen transport.
  • In the alveoli, because of low pCO2, oxygen binds with haemoglobin resulting in the formation of oxyhaemoglobin.
  • In tissues, high pCO2 facilitates the dissociation of oxyhaemoglobin.
  • O2 gets bound to haemoglobin at the lung surface where pCO2 is low and dissociates at the tissues where pCO2 is high.

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