MDCAT Biology MCQ #3298

An enzyme has a Km of 0.1 mM and Vmax of 100 μmol/min. What is the significance of the Km value?

MDCAT Biology MCQ #3298

  1. Question 1

    Q1. An enzyme has a Km of 0.1 mM and Vmax of 100 μmol/min. What is the significance of the Km value?

    • A) It represents the maximum velocity of the enzyme
    • B) It is the substrate concentration at which the enzyme reaches half of Vmax
    • C) It is the optimal pH for enzyme activity
    • D) It is the energy required for the enzyme to bind to the substrate

    Answer: It is the substrate concentration at which the enzyme reaches half of Vmax

    Explanation: Km is the Michaelis constant, indicating the substrate concentration for half-maximal velocity