BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 6, Problem 6U
Which of the following is NOT a properly of a catalyst?
a. A catalyst reduces the activation energy of a reaction.
b. A catalyst lowers the free energy of the reactants.
c. A catalyst does not change as a result of the reaction.
d. A catalyst works in both the forward and reverse directions of a reaction.
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One major difference between inorganic catalysts and organic catalysts is:
A. Inorganic catalysts may not be compatible with biological parameters
B. Organic catalysts are consumed during the chemical reaction
C. Organic catalysts influence the activation energy of a reaction
D. Inorganic catalysts decrease the probability a reaction will occur
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
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.
Chapter 6 Solutions
BIOLOGY
Ch. 6.1 - Prob. 1LOCh. 6.1 - Prob. 2LOCh. 6.1 - Describe the nature of redox reactions.Ch. 6.2 - Explain the laws of thermodynamics.Ch. 6.2 - Prob. 2LOCh. 6.2 - Contrast the course of a reaction with and without...Ch. 6.3 - Describe the role of ATP in short-term energy...Ch. 6.3 - Prob. 2LOCh. 6.4 - Discuss the specificity of enzymes.Ch. 6.4 - Explain how enzymes bind to their substrates.
Ch. 6.4 - Prob. 3LOCh. 6.5 - Prob. 1LOCh. 6.5 - Prob. 2LOCh. 6.5 - Prob. 3LOCh. 6 - Prob. 1DACh. 6 - A covalent bond between two atoms represents what...Ch. 6 - During a redox reaction the molecule that gains an...Ch. 6 - Prob. 3UCh. 6 - A spontaneous reaction is one in which a. the...Ch. 6 - Prob. 5UCh. 6 - Which of the following is NOT a properly of a...Ch. 6 - Where is the energy stored in a molecule of ATP?...Ch. 6 - Prob. 1ACh. 6 - Which of the following statements is NOT true...Ch. 6 - Prob. 3ACh. 6 - Prob. 4ACh. 6 - Enzymes have similar responses to both changes in...Ch. 6 - Prob. 6ACh. 6 - Examine the graph showing the rate of reaction...Ch. 6 - Phosphofructokinase functions to add a phosphate...
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- Which of the following statement is FALSE? a.Catabolic pathways are energetically favorable. b.All energetically unfavourable reactions have a positive delta G. c.Reactions with a positive delta G can occur through reaction coupling with an energetically favourable reaction such that the overall delta G is negative. d.Carbon monoxide is the most energetically favourable form of carbon under normal conditions.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_forwardThis is an _____ reaction since energy must be added to create product The potential energy of the reactants is ______ The potential energy of the products is ______ The change in potential energy, ΔE, is _____ A. exothermic B. endothermic C. unthermic D. 15 kcal/mol E. 40 kcal/mol F. 25 kcal/mol G. 50 kcal/mol H. 10 kcal/molarrow_forward
- Peptide bonds are formed via what type of reaction? A. Condensation B. Hydrolysis C. Oxidation-Reduction D. None of the abovearrow_forwardWhich of the following is NOT true about enzymes A. they do not alter reaction equilibria B. they accelerate the forward rate of a reaction C. they decrease ∆G’0 of a reaction D. they accelerate the reverse rate of a reaction E. they stabilize transition statesarrow_forwardAnabolic reactions: A. Require Energy B. Create Energy C. Break large compounds into simpler compounds D. Both A &Carrow_forward
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