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Question

Select the favorable conditions required for the formation of oxyhaemoglobin at the alveoli.


A

Low pO2, High pCO2, more H+, higher temperature.

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B

High pO2, Low pCO2, less H+, lower temperature.

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C

High pO2, High pCO2, less H+, Higher temperature.

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D

Low pO2, Low pCO2, more H+, higher temperature.

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Solution

The correct option is B

High pO2, Low pCO2, less H+, lower temperature.


The correct option is B.

Explanation of the correct option:

  1. pO2: The higher the partial pressure of oxygen, the more efficiently haemoglobin binds to oxygen.
  2. Temperature: Normal body temperature promotes hemoglobin-oxygen binding. The dissociation of oxygen from haemoglobin is caused at high temperatures.
  3. pCO2: A large amount of carbon dioxide reduces the formation of oxyhemoglobin. Carbon dioxide has a higher affinity for haemoglobin than oxygen.
  4. H+ : An increase in the concentration of hydrogen ions or a decrease in pH causes haemoglobin dissociation to increase.

Final answer: The favorable conditions required for the formation of oxyhemoglobin at the alveoli are high pO2, low pCO2, less H+, and lower temperature.


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