BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 6, Problem 1A
Summary Introduction
Introduction:
The endergonic reactions are those reactions that require energy input from outside to initiate the reaction. These types of reactions are non-spontaneous and the energy from high energy compounds is used to drive the endergonic reactions in the cell.
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The oxidation of NADH is favorable because it involves:
a)
Separation of like charges.
b)
Conversion of non-polar to polar bonds.
c)
Increased resonance.
d)
Conversion of liquid to gas.
The energy released by the hydrolysis of ATP is____ a. primarily stored between the alpha and beta phosphates b. equal to −57 kcal/mol c. harnessed as heat energy by the cell to perform work d. providing energy to coupled reactions
Endergonic reactions do which of the following? Select all that apply.
A. Are nonspontaneous
B. Consume energy
C. Are spontaneous
D. Release energy
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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- Coupled reactionsa. are endergonic overall.b. both synthesize and break down ATP.c. are catalyzed by the same enzyme.d. end with reactants that contain more energy than theirproducts.arrow_forwardSome cool enzyme (CE) catalyzes the conversion of compound F to compound A. Which of the following must be true of CE? a) CE can facilitate conversion of compound A into compound F. b) CE binds more tightly to the substrate F than to the product A. c) CE decreases the energy of the transition state between compounds F and A. d) CE facilitates net conversion of F to A whenever F is present.arrow_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 is incorrect about the ATP synthase mechanism? a. It explains how ATP is hydrolyzed into ADP and Pi b. At any moment, each catalytic site has a different conformation and binding affinity c. It is called the binding change mechanism d. It involves rotation-driven conformational changes that alter the affinity of each catalytic subunitarrow_forwardYou have a reaction that takes 8 hours to reach completion at 20 degrees celcius. What is the likely result of changing the temperature to 30 degrees celcius? a. the reaction should take less times b. reaction time would be unaffected c. the reaction should take more time Which would be the correct answer to this question?arrow_forwardThermogenin in the inner membrane of brown fat cell mitochondria does all of the following except A) decrease the proton gradient. B) uncouple ATP synthesis from electron transport. C) generate heat. D) decrease ATP synthesis. E) increase ATP synthesisarrow_forward
- All of the following increase enzymatic activity except a. an increase in temperature. b. an increase in pH. c. an increase in concentration of the substrate. d. an increase in concentration of the enzyme that catalyzes the reaction.arrow_forwardWhich of the following statements concerning metabolism and metabolic reactions is CORRECT? A. Anabolism and catabolism are two terms with the same meaning B. Some, but not all, metabolic reactions involve catabolism C. Energy is a by-product of all metabolic reactions D. No correct responsearrow_forwardWhich of these statements about ATP is true?a.The bond joining ADP and the third phosphate is a high-energy bond.b.The formation of ATP is coupled to energy-liberating reactions.c.The conversion of ATP to ADP and Pi provides energy for biosynthesis, cell movement, and other cellular processes that require energy.d.ATP is the “universal energy carrier” of cells.e. .All of these are true.arrow_forward
- 1. a) Describe what is happening in ATP Synthase in plain English! (how would you describe this step for someone who hasn’t taken Biol) b) If someone wanted to perform an experiment to evaluate the output of a particular step, which variable would be the best option to measure? (Think about which variable is UNIQUE to each step!)arrow_forwardenzymes are efficient catalysts because they can do which of the following? A) catalyze reactions that ottherwise would not occur. B) decrease the free energy of activation of reactions, C) decrease the standard free energy change o reactions , D) prevent the conversion of product to substrate, E) shift the equilibrium of reactions toward more complete inversion of productarrow_forwardWhy does the velocity reach a plateau (asymptote) at high substrate concentrations? a. At high substrate concentrations, the product becomes an inhibitor of the reaction that created it. b. At high substrate concentrations, all enzymes are saturated with substrates. c. At high substrate concentrations, all substrates have been converted to products. d. At high substrate concentrations, the product concentration is high and the reaction starts running in reverse.arrow_forward
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