Choose the following answer(s) that are älways U The structure of an enzyme remains exactly the same throughout the course of reactions. U A catalyst reduces the activation energy of a reaction. U All catalysts are enzymes. U A reaction rate is dependent on the concentration of substrate. U The amount of enzyme has no effect on the reaction rate. As temperature increases, the rate of a reaction increases. A catalyst lowers the free energy of the reactants.

Choose the following answer(s) that are älways U The structure of an enzyme remains exactly the same throughout the course of reactions. U A catalyst reduces the activation energy of a reaction. U All catalysts are enzymes. U A reaction rate is dependent on the concentration of substrate. U The amount of enzyme has no effect on the reaction rate. As temperature increases, the rate of a reaction increases. A catalyst lowers the free energy of the reactants.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter4: How Cells Obtain Energy

Section: Chapter Questions

Problem 5RQ: Which of the following is not true about enzymes? a. They are consumed by the reactions they...

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PREDICT In the following reaction series, which enzyme(s) is/are most likely to have an allosteric site to which the end product E binds? (a) enzyme 1 (b) enzyme 2 (c) enzyme 3 (d) enzyme 4 (e) enzymes 3 and 4
Which of the following statements are correct about how enzymes accelerate chemical reactions (select all that apply)? A. Enzymes bind substrates to raise their effective concentration B. Enzymes enhance the rate of a chemical reaction C. Enzymes catalyze chemical reactions by destabilizing transition states D. Side chains of protein provide reactive groups that facilitate reaction E. Enzymes shift the equilibrium of a chemical reaction to favor product formation
Amylase is an enzyme found in saliva that breaks down starch. The enzyme is currently functioning at its optimal pH of 7 and optimal temperature of 32oC. Which of the following could result in an increase in the reaction rate? Providing an environment with a pH of 9. Decreasing enzyme concentration. Placing the reactants in an environment at 10oC. Increasing substrate concentration.
Which of the following statements about enzymes are true? Choose all that apply. Group of answer choices: a) Enzymes are nonspecific b) Enzymes speed up the rates of chemical reactions c) Enzymes require a lot of energy to synthesize d) Enzymes are not important in biological systems E) Reactants in enzyme-catalyzed reactions are called substrates F) Enzymes lower the activation energy of reaction G) Enzymes change ∆G of reactions H) One enzyme usually catalyzes many types of reactions I answered for letters , B, E, anf F, and got a 1.5 out of 2, so I am missing one. Thank You!
Which of the following statements regarding enzymes is true? A. Enzymes decrease the free energy change of a reaction. B. Enzymes cjange the direction of chemical reaction. C. Enzymes prevent changes in substrate concentrations. D. Enzymes increase the rate of a reaction. E. Enzymes are permanently altered by the reactions they catalyze.
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Choose in the options what do enzymes do for the activation of energy of the reaction -Ea, given the theory of collision? a. enzymes will bind the reactants b. enzyme will raise temperature to incease the level of energy level. c. enzyme will provide an alternative reaction pathway
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