The binding of oxygen to hemoglobin differs from the oxygen-binding behavior of myoglobin because
A) oxygen binding to hemoglobin is cooperative.
B) oxygen binding to myoglobin is cooperative.
C) hemoglobin is not an allosteric protein.
D) the oxygen-binding curve of hemoglobin is hyperbolic.

Question

Quizplus · Accepted Answer

Hemoglobin exhibits cooperative binding of oxygen, meaning that the binding of one oxygen molecule increases the affinity for the next oxygen molecule. This is in contrast to myoglobin, which does not exhibit cooperative binding and has a hyperbolic oxygen-binding curve. Hemoglobin, due to its cooperative binding, has a sigmoidal (S-shaped) oxygen-binding curve.

The Binding of Oxygen to Hemoglobin Differs from the Oxygen-Binding