Question

the oxygen dissociation curve has a parabolic shape? a. as a result of breakdown of globin...

the oxygen dissociation curve has a parabolic shape?

a. as a result of breakdown of globin

b. as a result of breakdown of heme

c. as a result of the + 1 slope

d. as a result of the allosteric effect?

e. as a result of enzyme inhibition

Science   Anatomy-And-Physiology   
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Answer #1

The parabolic shape of the oxygen dissociation curve is a positive curve and after a certain period it becomes constant so that we get an 's' shaped curve..

The most favorable ans to this qn can be the option "c". The reason is that the oxygen dissociation curve depends on the partial pressure of oxygen, hemoglobin affinity to oxygen and oxygen saturation.. so that at the begining the readily hemoglobin acquires and releases oxygen molecules into the fluid. Later it will get saturated and the curve will become a straight line.

There is no breaking down of heme or globin which affects the curve or no enzyme inhibition happening.

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