Biochemistry Quiz
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ENZYMES & KINETICS
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The initial rate of an enzyme-catalyzed reaction is measured at several pH values. The activity is low at pH 5, rises to a maximum at pH 7, and then decreases, being low again at pH 9. The slope of the activity increase between pH 5 and 7 is less steep than the slope of the activity decrease between pH 7 and 9. This asymmetric profile suggests:
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