MCAT Question of the Day
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    Q:

    		 Three solutions are mixed, each with a high concentration of amino acids. Solution A has a high concentration of basic amino acids, Solution B has a high concentration of acidic amino acids, and Solution C is nearly all non-polar amino acids. Using isoelectric focusing as an electrophoresis method to distinguish these proteins, and given that the bottom of the gel is toward a lower pH, which of the following lists (from bottom to top) the positions of these proteins as a result of the separation?
    		 

    A

    		 Basic proteins, non-polar proteins, acidic proteins

    B

    		 Non-polar proteins, acidic proteins, basic proteins

    C

    		 Acidic proteins, basic proteins, non-polar proteins

    D

    		 Acidic proteins, non-polar proteins, basic proteins



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