Homework Answers
The oxygen binding curve for hemoglobin displays a "S-shaped" curve. It shows that oxygen binding is cooperative, which means that only the binding of first molecule is difficult, but as soon as one oxygen binds; the probability of binding the other vacant sites with oxygen increases. It also shows that the binding of oxygen with hemoglobin occurs with different affinities. When the limit of binding of oxygen is reached, and no more further binding with oxygen occurs, then the curve achieves a saturation over a narrow range of oxygen concentration.
Hence, the correct options are a,b, and c
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