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Which of the following expresses the velocity for an enzyme-catalyzed reaction that obeys Michaelis-Menten kinetics?

a) v = [E] [S]
b) v = Vmax [S] / (Km + [S])
c) v = Vmax / [S]
d) v = k [E] [S]

1 Answer

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Final answer:

The velocity for an enzyme-catalyzed reaction following Michaelis-Menten kinetics is given by v = Vmax [S] / (Km + [S]), which is known as the Michaelis-Menten equation.

Step-by-step explanation:

The velocity for an enzyme-catalyzed reaction that obeys Michaelis-Menten kinetics is expressed by the equation v = Vmax [S] / (Km + [S]). This equation describes how the rate of enzyme activity (v) increases with substrate concentration ([S]) up to a maximal velocity (Vmax), at which point all active sites on the enzyme are saturated. Km, the Michaelis-Menten constant, represents the substrate concentration at which the reaction rate is at half its maximum. The above equation is known as the Michaelis-Menten equation and suggests that the velocity of an enzyme-catalyzed reaction can be calculated if the maximum velocity and the Michaelis constant are known.

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