MCAT Question of the Day
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    Q:

    		 A particular enzyme-catalyzed biological reaction (Reaction 1) in humans takes the substrate A and converts it to B. The ΔG is -100 kJ/mol. A different enzyme is later found which also has A as a substrate (Reaction 2). The identity of the product from this different enzyme is not recorded. It is found that the ΔG for this new reaction is -120 kJ/mol. Which of the following holds true?
    		 

    A

    		 Reaction 2 must run faster kinetically than Reaction 1

    B

    		 The second enzyme is more efficient at converting A to B due to the larger decrease in free energy

    C

    		 Reactant A can bind to 2 enzymes at a time

    D

    		 The product of Reaction 2 cannot be B



    Thermochemistry | Chemical Kinetics |
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