Reference no: EM13110404

1. Which is FALSE about enzyme catalysis?
A. Enzymes are highly specific for their substrates
B. Enzyme-catalyzed reactions are 10^3 to 10^20 times faster than the coreesponding un-catalyzed reactions
C. Most enzymes are proteins or proteins with cofactors
D. Enzymes can lower activation energy
E. Enzymes raise the equilibrium constant of a reaction

2. Specifically, what is meant by the steady-state assumption in the derivation of the Michaelis-Menton equation?
A. The concentration of ES is constant.
B. The formation of the product is the rate limiting step.
C. The reaction has achieved maximum velocity.
D. The rate of the P + E => ES is negligible.
E. The temperature is constant.

3. If two enzymes catalyze the same reaction, what does a comparison of Km values tell you?
A. The enzyme with a lower Km has a lower Vmax
B. The enzyme with a higher Km has a lower Vmax
C. The enzyme with a lower Km has a greater affinity for the substrate.
D. The enzyme with a higher Km has a greater affinity for the substrate

4. Which statement is true about catalysts?
A. They are generally complementary to the substrate.
B. They lower the free energy of the intermediates.
C. They stabilize transition states.
D. They reduce ?G^o'
E. All of the above

5. Which is classified as a chemical mode of catalysis?
A. Induced fit
B. Proximity effect
C. Acid-base catalysis
D. Transition state stabilization
E. Catalytic antibodies