Question

In a particular enzyme-catalyzed reaction, Vmax = 0.2 mol/sec and Km = 6 mM. Assume the enzyme shows standard Michaelis-Menten kinetics. What is the rate of the reaction when [S] = 20 mM?

(a) 0.155

(b) 0.156

(c) 0.153

(d) 0.152

I have been asked this question in semester exam.

Asked question is from General Reaction Kinetics for Biological Systems topic in section Homogenous Reactions of Bioprocess Engineering

Answer 1

Correct option is (c) 0.153

The explanation is: v = Vmax[S] / (Km + [S])

= 0.2×20 / (6+20)

= 0.153.