Choose False during an enzyme catalyzed reaction. Substrate concentration is typically much larger than that of enzymes. The rate of enzymatic reaction is related to the concentration of ES complex. Velocity of reaction reaches a plateau above certain substrate concentration. Velocity of reaction is linearly dependent on a substrate concentration. Maximum velocity is related to the number of catalytic turnovers in the unit time.

Choose False during an enzyme catalyzed reaction. Substrate concentration is typically much larger than that of enzymes. The rate of enzymatic reaction is related to the concentration of ES complex. Velocity of reaction reaches a plateau above certain substrate concentration. Velocity of reaction is linearly dependent on a substrate concentration. Maximum velocity is related to the number of catalytic turnovers in the unit time.

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter23: Fatty Acid Catabolism

Section: Chapter Questions

Problem 21P: Using the ActiveModel for enoyl-CoA dehydratase, give an example of a case in which conserved...

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Please note the reaction expression below. Which of the following rate constants describes the breakdown of the enzyme-substrate complex? There may be more than one answer. k₂ E+S OK-2 U k₂ 0 k₁ OK.1 k3 k.3 SES EPE+P K.3 K.₂ k.
Which of the following statements regarding enzyme catalysis is false? All options are false. Once formed, the transition state slowly proceeds to forming the product at a rate determined by cofactor binding The free energy of binding of the enzyme to the transition state is more favorable than the free energy of binding of the enzyme to the substrate The substrate and active site of the enzyme are solvated to promote enzyme-substrate interaction Once formed, the product dissociates from the enzyme after ATP hydrolysis in order to regenerate the active site
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Which of the following statements regarding enzymes and transition states is true? stabilization of the transition state must be less than stabilization of ES for catalysis to occur binding of substrate to an enzyme often causes strain, thus promoting transition state formation the transition state conformation of an enzyme catalyzed reaction is identical to the conformation seen in the uncatalyzed transition state formation of the transition state always assures that the reaction will proceed to product none of the above are true
Enzymes use several types of catalytic mechanisms. Differentiate between acid-base catalysis, covalent catalysis, and metal ion catalysis. Acid‑base catalysis Covalent catalysis Metal ion catalysis All
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Match the descriptions and compounds with the terms competitive, uncompetitive, and noncompetitive inhibition. Competitive inhibition Uncompetitive inhibition Noncompetitive inhibition
Indicate whether each of the following statements about an enzyme active site is true or false. It is the location where substrate molecules are produced. It always has a fixed, rigid geometry. It always has a geometrical shape exactly complementary to that of substrate. It always accommodates several structurally related substrates. It is the location where substrate molecules are converted to product molecules. It always has a shape that has a degree of flexibility to it. It always accommodates only one specific substrate.
Enzyme X follows Michaelis-Menten kinetics. You add an inhibitor to your enzyme and you notice that the Vmax has decreased while the Km for enzyme X has increased as a result of adding the inhibitor. What are you able to conclude from this information? The inhibitor must be competitive The amount of total enzyme available to catalyze the reaction in the presence of the inhibitor has likely decreased The enzyme has a higher affinity for its substrate in the presence of the inhibitor The substrate concentration required to reach 1/2 of the maximum velocity for this enzyme has increased as a result of the inhibitor More than one of the above are conclusions that can be drawn from this information
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Which of the following statements are true about enzyme regulation via noncovalent interactions? Select all that apply. Molecules can cause a change in enzyme shape because they're able to bind to the enzyme somewhere other than the active site The function of an enzyme is altered by a chemical change in its primary structure, which is called phosphorylation Molecules that are similar to the substrate in both size and shape can compete with the substrate for access to the enzyme's active site Molecules that are similar to the substrate in both size and shape can compete with the substrate for access to a location other than the active site