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Question
Which of the following condition favours the dissociation of oxyhaemoglobin into oxygen and deoxyhaemoglobin?
Options
Low O2 pressure in tissue.
High O2 pressure in tissue.
Equal O2 pressure inside and outside tissue.
All times irrespective of O2 pressure.
MCQ
Solution
Low O2 pressure in tissue.
Explanation:
At low O2 pressure, oxyhaemoglobin dissociates into oxygen and deoxyhaemoglobin in tissues. When tissue oxygen pressure is high, oxyhaemoglobin will not dissociate into O2 and haemoglobin and will not return CO2 to the lungs.
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