Which Statement About Enzyme-Catalyzed Reactions Is FALSE

question 31

Multiple Choice

Which statement about enzyme-catalyzed reactions is FALSE?

• A) At saturating levels of substrate, the rate of an enzyme-catalyzed reaction is proportional to the enzyme concentration.
• B) If enough substrate is added, the normal V_max of a reaction can be attained even in the presence of a competitive inhibitor.
• C) The rate of a reaction decreases steadily with time as substrate is depleted.
• D) The activation energy for the catalyzed reaction is the same as for the uncatalyzed reaction, but the equilibrium constant is more favorable in the enzyme-catalyzed reaction.
• E) The Michaelis-Menten constant K_m equals the [S] at which V = 1/2 V_max.

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