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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Chapter 6, Problem 3TYK
When two glucose molecules react to form maltose:
a. the reaction represents a negative
b. free energy had to be available to allow the reaction to proceed.
c. the reaction is exothermic.
d. it supports the second law of
e. the resulting product has less potential energy than the reactants.
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Which of the following statements is false?
a. A reaction may not occur at a detectable rate even though it has a favorable equilibrium.
b. After a reaction, the enzyme involved becomes available to catalyze the reaction again.
c. For S → P, a catalyst shifts the reaction equilibrium to the right.
d. Lowering the temperature of a reaction will lower the reaction rate.
e. Substrate binds to an enzyme's active site.
Which one of the following statements is true of enzyme catalysts?
a. Their catalytic activity is independent of pH.
b. They are generally equally active on D and L isomers of a given substrate.
c. They can increase the equilibrium constant for a given reaction by a thousand fold or more.
d. They can increase the reaction rate for a given reaction by a thousand fold or more.
e. To be effective, they must be present at the same concentration as their substrate.
Which of the followingdescribe superior properties of enzymes (biological catalysts) over traditional chemical catalysts?
a. They are mostly and generally operative under mild temperature, pressure, and pH conditions
b. They are regulated only by substrate concentration
c. They do not effect the reaction equilibrium, but lower the reaction's activation energy
d. They are recycled at the end of the reaction
Choose all that apply
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following is true for all exergonic reactions? Group of answer choices A. The reactions are nonspontaneous B. A net input of energy from the surroundings is required for the reactions to proceed C. Some reactants will be converted to products D. The products have more total energy than the reactants E. The reaction proceeds with a net release of free energyarrow_forwardWhich statement is FALSE? a. For S P, a catalyst shifts the reaction equilibrium to the right. b. After a reaction, the enzyme involved becomes available to catalyze the reaction again. c. A reaction may not occur at a detectable rate even though it has a favorable equilibrium. d. Substrate binds to an enzyme's active site. e. Lowering the temperature of a reaction will lower the reaction rate.arrow_forwardIn an anabolic reaction A. biological molecules are broken down and the Gibbs free energy increases. B. biological molecules are synthesised and the Gibbs free energy is invariant. C. biological molecules are broken down and the Gibbs free energy decreases. D. biological molecules are synthesised and the Gibbs free energy increases. E. biological molecules are synthesised and the Gibbs free energy decreases.arrow_forward
- Which of the following will happen if the concentration of an enzyme increases for a given substrate?? a. the reaction rate increases similarly b. the rate of the reaction decreases to a point. c. there is no change in the reaction. d. the turnover number decreases at the same rate that the enzyme concentration increases. e. the reaction stops.arrow_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_forwardWhat statements concerning free energy change are true or false? a. Free energy change is a measure of the rate of a reaction. b. Free energy change is a measure of the maximum amount of work available from a reaction. c. Free energy change is a constant for a reaction under any conditions. d. Free energy is related to the equilibrium constant for a specific reaction. e. Free energy change is equal to zero at equilibriumarrow_forward
- Which 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_forwardUse the energy graph shown here to define and explain the importance of the following four terms. You must refer to the parts of the graph as examples. Don't forget to define AND explain all four terms. - uncatalyzed catalyzed Reactant Product Course of Reaction A. Activation energy B. Catalysis C. Gibbs free energy D. Exergonic reactions For the toolh Energy Released Energy Suppliedarrow_forwardWhich statements concerning free energy change are true?a. Free energy change is a measure of the rate of a reaction.b. Free energy change is a measure of the maximum amountof work available from a reaction.c. Free energy change is a constant for a reaction under anyconditions.d. Free energy change is related to the equilibrium constantfor a specific reaction.e. Free energy change is equal to zero at equilibrium.arrow_forward
- Which 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 ATP is true? a. The free energy value for the hydrolysis of ATP is nearly the same for ADP. b. The free energy value for the hydrolysis of ATP is greater than that for ADP. c. ATP hydrolysis is more likely at pH 5 than at pH 7. d. One mole of glycerate-1,3-bisphosphate can phosphorylate one mole of AMP to yield ATP.arrow_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_forward
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