a) For a simple E + S -> ES-> E + P reaction, the kineticsare order in [S] when [S] << Km. b) When [S] = Km,then vo = Vmax. c) vo becomes independent of [S] when [S]_ d) When [S] is doubled (2 times Km), the rate becomes Vmax. e) The type of enzyme inhibition in which Vmax isunaffected is ____.

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The zero order rate is seen in an enzyme catalyzed reaction when:
A. There is too much enzyme and too little substrate
B. Enzyme reactions are always first order
C. The Michaelis constant is very high
D. The V_max of the reaction is twice that which is observed
E. The enzyme substrate comples is at its maximum concentration

What happens when you add more enzyme to a catalyzed reaction that already is proceeding at V_max?
A. The reaction is inhibited because of competition for substrate
B. The plot of velocity vs. [S] will show a sigmoidal (an S-curve) shape
C. The reaction goes faster
D. The K_m of the reaction will change
E. There is no change in the rate of the reaction

Given two enzymes with the same V_max but with very different K_m values
A. The enzyme with the higher K_m will approach V_max at smaller [S]
B. V_max values cannot be the same with different K_m values
C. The steady state concentration of the enzyme-substrate complex is the same for each enzyme at every substrate concentration
D. The enzyme with a lower K_m value approaches V_max at lower [S]
E. Both values change when more enzyme is sdded

I think first one is E, second one is E, and last one is C. What are the correct answers for above?

The KM for the conversion of L- to D-Proline in the peptide AEPF by proline isomerase is 1.2x10-3 M. Under uncompetitive inhibition, the apparent KM becomes 4.0 x10-4 M and the apparent Vmax is 8.0 x10-6 M s-1. The Vmax for the uninhibited isomerization reaction is:

a. 2.7x10-6 M s-1 b. 2.0x10-2 M s-1 c. 0.32 M s-1 d. 2.4x10-5 M s-1 e. 1.4x10-8 M s
Answer is D, I need an explanation

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a) For a simple E + S -> ES-> E + P reaction, the kineticsare order in [S] when [S] << Km. b) When [S] = Km,then vo = Vmax. c) vo becomes independent of [S] when [S]_ d) When [S] is doubled (2 times Km), the rate becomes Vmax. e) The type of enzyme inhibition in which Vmax isunaffected is ____.

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