Which of These Statements About Enzyme-Catalyzed Reactions Is False

question 47

Multiple Choice

Which of these statements 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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