BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
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Chapter 6, Problem 4A
Summary Introduction
Introduction:
The perpetual motion can be defined as the movement of the body which will continue indefinitely. The perpetual motion machine is the machine that is able to do work indefinitely and it does not require any energy source and once the energy is supplied it never losses the system.
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Use 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 Supplied
The Acronym, OiL-RiG, is meant to help explain the fact that:A. OilRigs are a threat to the environment and need to be constantlychecked for leaks.B. Oxidation Reactions involve a loss in Valence Electrons andReduction Reactions involve a gain in Valence Electrons.C. Oxidation Reactions involve a loss in Valence Protons andReduction Reactions involve a gain in Valence Protons.D. Oxidation is Laborious & Reduction is Glorious.
Which of the following statements is FALSE?
Select one:
a.
Enzymes lower the amount of energy needed for a reaction.
b.
Enzymes are chemically unchanged during the actual catalytic process.
c.
Enzymes speed up the attainment of a reaction equilibrium.
d.
Enzymes make reactions 103 to 1020 times faster.
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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- In 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_forwardOne 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 occurarrow_forwardIf the environmental temperature gets too high, what will happen to an enzyme and the chemical reaction it catalyzes? Group of answer choices A. It will not encounter its substrates often, and the reaction will slow down. B. It will crystallize, the active site will become inflexible and slow down the reaction. C. It will denature, lose its shape, and the reaction will not occur. D. It will become less fluid, and be unable to transport substances easily. E. It will become more fluid, and speed up the reaction.arrow_forward
- Would you expect the products of an endergonic reaction to be more stable than the reactants? a. yes because the energy of activation is negative in these cases. b. no because the products have higher potential energy which result in less stable molecules. c. no because the energy of activation is always lower in an endergonic reaction, which results in a less stable product. d. yes because the products have higher free energy and therefore require more energy to break bonds.arrow_forwardWhich 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.arrow_forwardWhich 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_forward
- What are enzymes? A. Enzymes are biological catalysts made up of amino acids B. Enzymes are biological catalysts that create an environment to lower the energy expenditure to break "old" bonds. C. Enzymes are biological catalysts that provide a mechanism to make unfavorable reactions proceed. D. Enzymes are biological catalysts that require cofactors to effect catalysis E. Enzymes are biological catalysts that provide the means to channel chemical energy to allow biological transformations to occurarrow_forwardWhich of the following statement about the enzyme thermodynamics is TRUE? a. Enzymes increase the activation barrier (∆G cat) of the products b. Enzymes decrease the activation barrier (∆G cat) of the products c. Enzymes decrease the free energy (∆G) of the products d. Enzymes decrease the free energy (∆G) of the reactants e. Enzymes increase the activation barrier (∆G cat) of the reactantsarrow_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_forward
- Which of the following statements is not true about enzymes?* A. Enzymes are biological catalysts B. Enzymes as catalysts lowers the activation energy thus, speeds up the rate of reaction C. Enzymes are proteins D. Enzymes are highly specific E. None of the given optionsarrow_forwardWhich 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 applyarrow_forwardWhich 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_forward
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