BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 6, Problem 2U
During a
a. reduced and now has a higher energy level.
b. oxidized and now has a lower energy level.
c. reduced and now has a lower energy level.
d. oxidized and now has a higher energy level.
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During a redox reaction the molecule that gains an electron has been
a. reduced and now has a higher energy level.
b. oxidized and now has a lower energy level.
c. reduced and now has a lower energy level.
d. oxidized and now has a higher energy level.
Define the following terms: a. hydride ion b. oxidation reaction c. energy d. FAD e. electron transport pathway
Enzymes catalyze a chemical reaction by
A. decreasing the amount of ATP required to activate a reaction
B. increasing the amount of ATP required to activate a reaction
C. slowing down the reaction to obtain more products
D. increasing the reaction to obtain more products
E. decreasing the amount of ATP required and obtaining more products.
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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- Endergonic reactions do which of the following? Select all that apply. A. Are nonspontaneous B. Consume energy C. Are spontaneous D. Release energyarrow_forwardExergonic reactionsa. release potential energy b. consume energy c. form bonds d. occur only outside the cellarrow_forwardA molecule that is phosphorylated has a. been reduced as a results of a redox reaction involving the loss of an organic phosphate. b. a decreased chemical reactivity; it is less likely to provide energy for cellular work. c. been oxidized a a result of a redox reaction involving the gain of an inorganic phosphate. d. an increased chemical potential energy; it is primed to do cellular work. e. less energy than before its phosphorylation and therefore less energy for cellular work.arrow_forward
- In which of the following reactions is the reactant oxidized? a. ATP → AMP b. NAD+ → NADH c. NADH → NAD+ d. acetaldehyde → ethanolarrow_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_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
- Enzymes are: A. Broken down in reactions that require energy input. B. Not needed forr catabolic reactions. C. Electron carrier molecules. D. Proteins that function as catalysts. E. All of the choices are correct.arrow_forwardWhich of these statements concerning enzymes is correct? a. Enzymes increase the rate of reactions but are permanently changed as a result. b. Enzymes are proteins that function as catalysts. c. Enzymes increase the activation energy requirement for a reaction to occur. d. Enzymes usually can only double the rate of a chemical reaction. e. Enzymes increase the kinetic energy of the reactants.arrow_forwardDefine the following terms:a. FADb. hydride ionc. energyd. electron transport pathwaye. coenzymearrow_forward
- 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_forwardWhat 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_forwardINSTRUCTIONS - Answer the following multiple-choice questions and EXPLAIN in 3-5 sentences why you chose that answer. Answer properly -arrow_forward
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