# An enzyme catalyzes a reaction at a rate of 20 micromolar/min.mg when the concentration of substrate (S) is at 0.01 M. The Km of the enzyme for this substrate is 1 x 10-5 M. Assuming that Michaelis-Menten kinetics are followed, what will the reaction rate be when the concentration of S is 1 x 10-6 M?

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An enzyme catalyzes a reaction at a rate of 20 micromolar/min.mg when the concentration of substrate (S) is at 0.01 M. The Kof the enzyme for this substrate is 1 x 10-5 M. Assuming that Michaelis-Menten kinetics are followed, what will the reaction rate be when the concentration of S is 1 x 10-6 M?

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Step 1

The Michaelis-Menten equation of an enzyme catalysed reaction is given as:

Step 2

Given,

Rate of an enzyme catalysed reaction, Vo = 20 micromolar/min.mg

Concentration of substrate, [S] = 0.01 M

Kof the enzyme for this substrate = 1 × 10-5 M

The maximal rate can be calculated using the Michaelis-Menten equation as :

Step 3

Now, the concentration of S, [S] is 1 × 10-6&n...

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