MCAT Question of the Day
    •

    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 |
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