Q: Hemoglobin contains four subunits, each capable of binding oxygen. What effect does this have on the effectiveness of hemoglobin as an oxygen carrier?
A		Allows for cooperativity in oxygen binding
B		Hemoglobin is four times more efficient at carrying oxygen than one of its subunits
C		Lower likelihood of mutations having a large impact on oxygen transport through the body
D		The larger structure allows for slower movement, increasing time for oxygen pick-up and drop-off.

Protein Structure and Function | Circulatory System |