MCAT Question of the Day
    •

    Q:

    		 Hemoglobin exhibits a phenomenon called cooperativity, which means:
    		 

    A

    		 the hemoglobin molecule can bind multiple types of molecules, not just oxygen.

    B

    		 the four subunits of hemoglobin are able to bind together without need for any enzymatic catalysis.

    C

    		 the molecule can interact with other hemoglobin molecules to improve oxygen saturation.

    D

    		 each additional molecule of oxygen binding to hemoglobin makes subsequent binding of oxygen molecules easier.



    Respiratory System |
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