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 Enzyme kinetic q  

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Enzymes A and B catalyse the same reaction , but Km for A is 0.000006mol/l and for B is 0.003 mol/l.If both enzymes have the same Vmax and if the activity of both enzymes is measured for substrate concentration of 0.003 mol/l , the relation of V(of enzymeA):V(of enzymeB) is aprox
a. 1:1
b. 2:1
c. 20:1
d. 1000:1


Hi, it's Yulia, I couldn't log in
The answer is B, because enzyme A must be operating at Vmax and enzyme B is half way to Vmax, since the substrate concentration equals Km

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