Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Chapter 4, Problem 7RA
Which 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 P; 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.
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Which 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.
Which of the following statements concerning ATP synthesis is NOT true?
a.
The open conformation of the ATP synthase is for releasing ATP.
b.
The gamma subunit in the stalk responds to the flow of H+ and rotates the assembly counterclockwise and thus change the conformations of the active site to synthesize ATP.
c.
The tight conformation of the ATP synthase is for converting ADP and phosphate to ATP.
d.
The loose conformation of the ATP synthase is for binding ADP and phosphate.
e.
Ten protons are required to catalyze the rotation of the subunits so that one ATP is synthesized.
Clear my choice
Which of the following is True?a. ATP is a long-term energy storage molecule.b. ATP can carry energy from one cell to another.c. ADP inhibits glucose breakdown in cells.d. ATP can act as an allosteric regulator molecule.
Chapter 4 Solutions
Human Physiology
Ch. 4 - Use the lock-and-key model to explain how enzymes...Ch. 4 - Explain how enzymes are named, and the nature of...Ch. 4 - Draw graphs to represent the effects of changes in...Ch. 4 - Prob. 4CPCh. 4 - Prob. 5aCPCh. 4 - Prob. 5bCPCh. 4 - Prob. 5cCPCh. 4 - Prob. 6aCPCh. 4 - Define the terms exergonic reaction and endergonic...Ch. 4 - Prob. 7aCP
Ch. 4 - Prob. 7bCPCh. 4 - Which of these statements about enzymes is...Ch. 4 - Which of these statements about enzyme-catalyzed...Ch. 4 - Which of these statements about lactate...Ch. 4 - In a metabolic pathway, a. the product of one...Ch. 4 - In an inborn error of metabolism,
a. a genetic...Ch. 4 - Which of these represents an endergonic...Ch. 4 - Which of these statements about ATP is true? a....Ch. 4 - When oxygen is combined with 2 hydrogens to make...Ch. 4 - Enzymes increase the rate of chemical reactions...Ch. 4 - According to the law of mass action, which of...Ch. 4 - Explain the relationship between an enzyme's...Ch. 4 - Explain how the rate of enzymatic reactions may be...Ch. 4 - Explain how end-product inhibition represents a...Ch. 4 - Prob. 14RACh. 4 - The coenzymes NAD and FAD can "shuttle" hydrogens...Ch. 4 - Prob. 16RACh. 4 - Why do we need to eat food containing niacin and...Ch. 4 - Metabolic pathways can be likened to intersecting...Ch. 4 - Prob. 19RACh. 4 - Suppose you come across a bottle of enzyme tablets...Ch. 4 - Describe the energy transformations that occur...Ch. 4 - Use the reversible reactions involving the...Ch. 4 - Use the graph here and in figure 4.4 to answer the...Ch. 4 - Use the graph here and in figure 4.4 to answer the...Ch. 4 - Prob. 25RACh. 4 - Prob. 26RACh. 4 - Prob. 27RA
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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 one of the following statement is CORRECT for ATP? Select one: a. Divalent cation C12- stabilize ATP and blocks the driving force for association and make ATP unstable b. In pure water ATP Is very stable and high water concentration would only drive this reaction forward with the help of enzyme c. Phosphate bonds of ATP is "highly transferable" bonds. d. ATP is very unstable in salt solutions having near neutral pH therefore spontaneously dissociate into ADP and Parrow_forwardIn the first step of glycolysis, glucose can be phosphorylated to glucose-6-phosphate, because.. A. transfer of a phosphate from ATP to glucose is endergonic. B. a phosphoanhydride bond has higher energy of hydrolysis than is required for formation of a phosphoester bond. C. the reaction does not require an enzyme. D. the reaction is highly reversible. E. All of the above are correct.arrow_forwardWhich of the following is the most correct statement concerning ATP? Select one: a. ATP is never used for mechanical work. b. ATP consists of three phosphate groups, ribose, and adenine c. The hydrolysis of ATP forms glucose and oxygen. d. ATP is used to stabilize a plasma membranearrow_forward
- Which one of the following buffers the concentration of ATP? Select one: a. Glycolysis b. Acidosis O c. Phosphocreatine O d. Oxidative phosphorylation e. Acetyl coenzyme Aarrow_forwardThe hydrolysis of ATP requires a. energy. b. water. C. a high temperature. d. energy and water. e. All of these. b. a d.arrow_forwardWhich of the following statements is a lie? Select one: a.Energy is released when the terminal phosphate group is removed, known as dephosphorylation, whereas energy is needed when a phosphate group is added, also known as phosphorylation. b.A living organism has an unlimited supply of energy. c.Energy mediated by ATP comes from the metabolism of different isomers of C6H12O6 (sugar), such as glucose, fructose, and galactose. Which of the following statements is a lie? Select one: a.The transfer of energy in living systems use electrons to allow the cell to transfer energy in large amounts. b.Electrons play an important role in redox reactions. This is true because it is the electrons that undergo the redox reactions in living systems. c.For nicotinamide adenine (NAD), its oxidized form is NAD+ while its reduced form is NADH. This is true because NAD+ can accept electrons from an organic molecule.arrow_forward
- In biological systems, ATP functions bya. providing the energy to drive endergonic reactions.b. acting as an enzyme and lowering the activation energy of certainreactions.c. adjusting the pH of solutions to maintain optimal conditions forenzyme activity.d. regulating the speed at which endergonic reactions proceed.e. interacting with enzymes as a cofactor to stimulate chemical reactions.arrow_forwardWhich one of the following statement is CORRECT for ATP? Select one: a. Divalent cation Cl2- stabilize ATP and blocks the driving force for association and make ATP unstable. O b. Phosphate bonds of ATP is "highly transferable" bonds. O c. ATP is very unstable in salt solutions having near neutral pH therefore spontaneously dissociate into ADP and Pi. O d. In pure water ATP is very stable and high water concentration would only drive this reaction forward with the help of enzyme.arrow_forwardWhich of the following statements is TRUE? Select one: A. Lactic acid is a product of aerobic respiration; ethyl alcohol is a product of fermentation. B. Oxidation is the loss of electrons; reduction is the gain of electrons. C. Oxygen is a product of cellular respiration; carbon dioxide is a product of photosynthesis. D. Glucose is a product of aerobic respiration; lactic acid is a product of anaerobic respiration.arrow_forward
- Increased energy demands (increase in ATP being made in the cell) on the electron transport chain of oxidative phosphorylation should change the pH of the intermembrane of the mitochondria to...? Select one: a. More acidic due to the increase in protons being pumped. b. No change since pH is not altered with increased proton concentration. c. More basic due to the increase in protons being pumped.arrow_forwardWhich of the following statements concerning the location of the metabolic pathways is correct? a. All reactions of the glycolysis take place in the mitochondria. b. All reactions of the TCA cycle take place in the mitochondria. c. Some reactions of the TCA cycle take place in the cytosol, and some in mitochondria. d. Some reactions of the glycolysis take place in the cytosol, and some in mitochondria.arrow_forwardThe production of ATP (cellular respiration) is actually a(n). However, the reaction requires the breakdown of Glucose, which is energetically, 15. rxn. a. endergonic : exergonic b. exergonic : endergonic c. catabolic : neutral d. dehydration : unstable is NOT LIvolved in co stgnaling?arrow_forward
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