3. Relation between Reaction Velocity and Substrate Concentration: Michaelis-Menten Equation (a) At what substrate concentration would an enzyme with a k of 30.0 s¹ cat and a K of 0.0050M operate at one-quarter of its maximum rate? m Vo/Vmax=0.25 (b) Determine the fraction of that would be obtained at the following substrate concentrations [S]: ½ K, 2 K, and 10 K. m max (c) An enzyme that catalyzes the reaction XY is isolated from two bacterial species. The enzymes have the same Vmax, but different Km values for the substrate X. Enzyme A has a Km of 2.0 M, while enzyme B has a Km of 0.5 M. The plot below shows the kinetics of reactions carried out with the same concentration of each enzyme and with [X] = 1 [M. Which curve corresponds to which enzyme? [Y] Time

3. Relation between Reaction Velocity and Substrate Concentration: Michaelis-Menten Equation (a) At what substrate concentration would an enzyme with a k of 30.0 s¹ cat and a K of 0.0050M operate at one-quarter of its maximum rate? m Vo/Vmax=0.25 (b) Determine the fraction of that would be obtained at the following substrate concentrations [S]: ½ K, 2 K, and 10 K. m max (c) An enzyme that catalyzes the reaction XY is isolated from two bacterial species. The enzymes have the same Vmax, but different Km values for the substrate X. Enzyme A has a Km of 2.0 M, while enzyme B has a Km of 0.5 M. The plot below shows the kinetics of reactions carried out with the same concentration of each enzyme and with [X] = 1 [M. Which curve corresponds to which enzyme? [Y] Time

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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