Calculate the amount of enzyme in a reaction if it has an initial rate of 119.4 nmol.min^-1 and specific activity of 0.76 ?mol.min^-1.mg^-1.
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When enzymes are present at very low concentration, their effect on reaction rate can be described by firstorder kinetics. Calculate by what factor the rate of an enzyme-catalyzed reaction changes when the enzyme concentration is changed from $1.5 \times 10^{-7} \mathrm{M}$ to $4.5 \times 10^{-6} \mathrm{M}$
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When enzymes are present at very low concentration, their effect on reaction rate can be described by first-order kinetics. By what factor does the rate of an enzymecatalyzed reaction change when the enzyme concentration is changed from $1.5 \times 10^{-7}$ to $4.5 \times 10^{-6} \mathrm{M}$ ?
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