MCAT Question of the Day
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    Q:

    		 There are four human blood types: A, B, AB, and O. Which of the following best explains the relative incompatibility of the people with an O blood type with the other three blood types?
    		 

    A

    		 Those with blood type O require a specific nutrient present only in O blood.

    B

    		 Type O blood lacks preventative factors against a compatibility with A, B, and AB blood.

    C

    		 Type O blood contains differently shaped blood cells; these geometrical differences between O blood and A, B, and AB blood prevent compatibility.

    D

    		 Type O blood contains antibodies against A and B blood, thus an individual with O blood can only accept blood of type O.



    Circulatory System |
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