阿摩線上測驗
84. Isoform A of LDH has Km = 0.1 mM and kcat = 500 s-1. Isoform B has Km = 0.5 mM and kcat = 1000 s-1. When substrate concentration is 10 mM, which statement is correct?
(A) Isoform A is more efficient because kcat/Km is higher.
(B) Isoform B is faster because both enzymes are saturated and Isoform B has higher kcat.
(C) Isoform A is faster because it reaches saturation at lower substrate concentration.
(D) Both isoforms have equal reaction rates because substrate is in excess.
(E) Efficiency cannot be compared without knowing enzyme concentrations.
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統計： A(1), B(2), C(0), D(0), E(0) #3853389
統計： A(1), B(2), C(0), D(0), E(0) #3853389
