Question

What does the Oxyhemoglobin dissociation curve tell us about the affinity between oxygen and hemoglobin at a high partial pressure of oxygen and at a low partial pressure of oxygen? Why is the affinity between oxygen and hemoglobin at these different partial pressure advantageous (what does is facilitate?)

Answer 1

Answer-

An oxyhemoglobin dissociation curve is graph that discribes the relationship of partial pressure to the binfing of oxygen to heme and its subsequent dissociation from heme. As you know that gages travel from an area of higher partial pressure to an area of lower partial pressure. The affinity of an oxygen molecule for heme increases as more oxygen molecule are bound. Therefore, in the oxygen-hemoglobin dissociation curve, as the partial pressure of oxygen increases, a proportionately greater number of oxygen molecules are bound by heme. And curve shows that the lower the partial pressure of oxygen, the fewer oxygen molecules are bound to heme.