Which of the following statements most accurately explains whyhemoglobin is able

Question

Which of the following statements most accurately explains whyhemoglobin is able to deliver oxygen to myoglobin in thetissues?

Myoglobin has a hyperbolic oxygen binding curve, whereashemoglobin has a sigmoidal oxygen binding curve.

The iron in the heme group of myoglobin is Fe3+, which has ahigher affinity for oxygen.

The pH of tissue/muscle is always higher than that of blood,which aids hemoglobin in giving up its oxygen.

The presence of BPG in the red blood cells shifts theequilibrium towards the R state of

Myoglobin has a hyperbolic oxygen binding curve, whereashemoglobin has a sigmoidal oxygen binding curve.

Explanation / Answer

The first one, about the curves. http://www.wiley.com/college/boyer/0470003790/structure/HbMb/mbhb_intro.htm

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