Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 6, Problem 5TYK
In the following graph:
A represents the product.
B represents the energy of activation when enzymes are present.
C is the free energy difference between A and D.
C is the energy of activation without enzymes.
E is the difference in free energy between the reactant and the products.
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Students have asked these similar questions
We can increase the rate of a reaction by decreasing the activation energy. And, we can do it by using an enzyme. Explain how enzyme decrease the activation energy.
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.
Which of the following accurately describes how an enzyme functions?
a. reduces the energy content of the products
b. allows for the exothermic reaction of materials that are usually endothermic
c. changes the reaction mechanism effectively reducing the activation energy
d. shifts the equilibrium for the reaction
Chapter 6 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 6.1 - Prob. 1SBCh. 6.1 - In thermodynamics, what is meant by an isolated...Ch. 6.2 - Prob. 1SBCh. 6.2 - Prob. 2SBCh. 6.2 - Distinguish between exergonic and endergonic...Ch. 6.3 - Prob. 1SBCh. 6.3 - How are coupled reactions important to cell...Ch. 6.4 - How do enzymes increase the rates of the reaction...Ch. 6.4 - Can enzymes alter the G of a reaction?Ch. 6.5 - Prob. 1SB
Ch. 6.5 - What is the difference between competitive and...Ch. 6.5 - Prob. 3SBCh. 6.6 - Prob. 1SBCh. 6 - The capacity to do work best defines: a metabolic...Ch. 6 - The assembly of proteins from amino acids is best...Ch. 6 - When two glucose molecules react to form maltose:...Ch. 6 - When glucose reacts with ATP to form...Ch. 6 - In the following graph: A represents the product....Ch. 6 - Which of the following methods is not used by...Ch. 6 - In an enzymatic reaction: a. the enzyme leaves the...Ch. 6 - Which of the following statements about the...Ch. 6 - Which of the following statements about inhibition...Ch. 6 - Which of the following statements is incorrect? a....Ch. 6 - Prob. 11TYKCh. 6 - Discuss Concepts Trace the flow of energy through...Ch. 6 - Prob. 13TYKCh. 6 - Prob. 14TYKCh. 6 - Prob. 15TYKCh. 6 - Prob. 16TYKCh. 6 - Prob. 17TYKCh. 6 - Prob. 1ITDCh. 6 - Prob. 2ITDCh. 6 - Prob. 3ITD
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- Which of the following statements is not correct? a. Energy cannot be created or destroyed. b. Energy cannot change from one form to another. c. Energy tends to disperse spontaneously. d. Energy can be transferred.arrow_forwardFigure 4.5 Energy inputs and outputs in chemical reactions. 1 Some reactions convert molecules with lower energy to molecules with higher energy, so they require a net energy input in order to proceed. 2 Other reactions convert molecules with higher energy to molecules with lower energy, so they end with an energy release Figure It Out: Which law of thermodynamics explains energy inputs and outputs in chemical reactions?arrow_forwardWhich of the following is TRUE about the enzymatic catalysis of a chemical reaction? A. It increases the energy of the transition state B. It decreases the free energy ∆G so that a reaction can proceed spontaneously C. It decreases the energy of the transition state D. It increases the forward and reverse ratesarrow_forward
- The graph presented here depicts the activation energy, or the amount of energy needed for a reaction to proceed, with and without an enzyme. a. Which reaction requires more energy to proceed—the one with or without an enzyme? How do you know? b. Is this reaction anabolic or catabolic? How do you know?arrow_forwardWhich of the following statements is/are true about enzyme-catalyzed reactions? A. The reaction is faster than the same reaction. B. The free energy change of the reaction is opposite from the reaction in the absence of the enzymes. C. The reaction always goes in the direction toward chemical equilibrium. D. A and B only E. A, B and Carrow_forwardWhich of the following statements concerning enzymes is TRUE? a. Enzymes can increase the equilibrium constant of a reaction by 1000-fold. b. The activity of many enzymes can be regulated. c. Many enzymes are consumed in the reactions they catalyze. d. The rate of enzymatic catalysis is independent of pH.arrow_forward
- The active site _______________. a. is the compound that an enzyme reacts with during the chemical reaction.b. is where the reactants bind.c. is another term for “substrate.”d. is the term for an enzyme that has returned to its original state after achemical reaction.arrow_forwardUse the following graph to diagram the energetics of a chemical reaction, with and without an enzyme. Be sure to position reactants and products at appropriate points and to indicate the stages in the reaction and the energy levels.arrow_forwardWhich of the following is NOT true of enzymes? a) They may interact chemically with their substrates b) They may catalyze a reaction in both forward and reverse directions. c) They may alter Keq for the reaction that they catalyze. d) They may decrease the entropy of their substrates.arrow_forward
- Which two of the following apply to the products of an exergonic reaction? A. Have less energy than the reactants B. Are less ordered than the reactants C. Are more ordered than the reactants D. Have more energy than the reactantsarrow_forwardWhich 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 formationarrow_forwardWhich of the following chemical reactions would occur most rapidly without an enzyme? Select one: a. An endergonic chemical reaction in the presence of ATP b. An endergonic chemical reaction without ATP c. An exergonic chemical reaction in a very hot environment d. An exergonic chemical reaction in a very cold environment e. All of the above would occur rapidlyarrow_forward
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