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Reported Question / Answer
Q.) The oxygen-hemoglobin dissociation curve is sigmoid because:
1)
Oxygen affinity of Hemoglobin decreases when the pH of blood falls
2)
Binding of oxygen to Hemoglobin reduces the affinity of Hb for CO2
3)
Binding of one oxygen molecule increases the affinity of binding other O2 molecules
4)
Binding of one oxygen molecule decrese the affinity of binding other O2 molecules
5)
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Answer :
3
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