MCAT Question of the Day
    •

    Q:

    		 An overall reaction is made up of 20 elementary reactions. Halfway through the reaction mechanism, the concentration of one particular species has decreased. What is the most likely role of this species in the reaction?
    		 

    A

    		 Reactant

    B

    		 Catalyst

    C

    		 Intermediate

    D

    		 A and B



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