試題詳解

61. Which of the following descriptions about the Michaelis-Menten equation is false?
(A) KM measures the substrate concentration at which the reaction rate is 1/2Vmax.
(B) An enzyme with a low KM means that it has low affinity for its substrate.
(C) An enzyme with a low kcat means that it has a low catalytic rate.
(D) The turnover number, kcat, measures the rate of the catalytic process.
(E) The ratio kcat/KM is a convenient measure of enzyme efficiency.