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Question
Haemoglobin has maximum affinity for ______.
Options
CO2
O2
CO
H+
MCQ
Fill in the Blanks
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Solution
Haemoglobin has maximum affinity for CO.
Explanation:
Haemoglobin has the highest affinity for carbon monoxide (CO), about 200 - 250 times more than oxygen. CO binds very tightly to haemoglobin, forming carboxyhaemoglobin, which blocks oxygen transport.
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