Which of the following assumptions are made in Michaelis Menten kinetics? A. The

Question

Which of the following assumptions are made in Michaelis Menten kinetics? A. The concentration of the enzyme is negligible compared to the concentration of the substate. B. The substate is limiting. C The amount of product is small compared to the amount of substrate available. D. All of the above. E. None of the above. A noncompetitive inhibitor of an enzyme catalyzed reaction A. increases KM and increases Vmax B. increases KM and reduces Vmax C. reduces KM and increase Vmax D. reduces KM and reduces Vmax The effect of non-competitive inhibition on a Lineweaver-Burk Plot is that A. it can move the entire curve to the right B. it can change the y-intercept C. it can change the x-intercept D. all of these Which of the following statements is true for enzymatically catalyzed reaction? A. The activation energy of the reaction is lowered so that a larger proportion of the substrate qualifies overcome it B. Additional substrate molecules are energized to overcome the activation energy of the reaction C. The activation energy of the reaction is increased, thus decreasing the likelihood that any substrate molecules will overcome it D. The activation energy of the reaction is lowered so that a fewer substrate molecules can overcome it Given an enzyme with a Km = 10m M and Vmax = 100 m mol/min. If [S] = 100 m M, which of the follow will be true? A. A 10 fold increase in Vmax would increase velocity 10 fold y B. A 10 fold decrease in Km would increase velocity C. Both (a) and (b) D. A 10 fold increase in Vmax would decrease velocity 20 fold What is Vmax? A. The concentration of S at which the enzyme becomes saturated. B. The velocity at which enzyme E is saturated with substrate S. C. The initial velocity of the enzyme at v = [S]. D. One half of the limiting enzymatic rate.

Explanation / Answer

6)

All the three are true.

The concentration of enzyme is negligible as compared to the amount o substrate.

The substrate is not limiting.

The amount of product is small as compared to the amount of substrate.

7) A non-competitive inhibitor of a enzyme catalyzed reaction :-

Km remains same and Vmax reduces

8) It will change the y- intercept as written above.because Vmax reduces so the intercept increses.

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