It is often stated that the phosphate-phosphate bonds in ATP are "high energy," but in fact, they are not notably high in energy. Rather, they are easy to break, and the AG of hydrolysis is a "useful" quantity of energy. What makes the phosphate bonds easy to break? O They are close to the destabilizing nitrogenous base adenosine. O High alkalinity attacks bonds between phosphate groups. O Electrostatic repulsion of phosphate groups. O Positive charges on amino groups repel each other. High acidity attacks bonds between amino acids.

It is often stated that the phosphate-phosphate bonds in ATP are "high energy," but in fact, they are not notably high in energy. Rather, they are easy to break, and the AG of hydrolysis is a "useful" quantity of energy. What makes the phosphate bonds easy to break? O They are close to the destabilizing nitrogenous base adenosine. O High alkalinity attacks bonds between phosphate groups. O Electrostatic repulsion of phosphate groups. O Positive charges on amino groups repel each other. High acidity attacks bonds between amino acids.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter2: Cell Physiology

Section: Chapter Questions

Problem 3SQE

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Similar questions

Energy is stored long-term in the bonds of _____ and used short-term to perform work from a(n)_____molecule. a. ATP : glucose b. an anabolic molecule : catabolic molecule c. glucose: ATP d. a catabolic molecule : anabolic molecule
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.
Magnesium ion (Mg2+) forms complexes with the negative charges of the phosphate in ATP. In the absence of Mg2+, would ATP have more, less, or the same stability as when the ion is present?
The primary source of phosphate for chemical reactions in cells comes as ATP, ADP, or AMP. The ΔG˚’ for the hydrolysis of ATP into ADP and Pi is -30.5 kJ/mol. Calculate the equilibrium constant for the hydrolysis of ATP.
The hydrolysis of ATP has a large negative ΔG'°; nevertheless it is stable in solution due to: a. entropy stabilization. b. ionization of the phosphates. c. resonance stabilization. d. the hydrolysis reaction being endergonic. e. the hydrolysis reaction having a large activation energy.
ATP hydrolysis is highly _____ because it involves _____. Endergonic; removal of a phosphate group forming phosphoric acid, which decreases the pH Endergonic; breaking of covalent bonds Exergonic; separation of negatively charged phosphate groups Exergonic; alteration of the transition state
Which of the following compounds would you expect to liberate the least free energy when hydrolyzed? Explain. a. ATP b. ADP c. AMP d. phosphoenolpyruvate e. phosphocreatine
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 P
A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by the reaction ATP(aq)+H2O(l)⟶ADP(aq)+HPO2−4(aq)ATP(aq)+H2O(l)⟶ADP(aq)+HPO42−(aq) for which Δ?∘rxn=−30.5 kJ/molΔGrxn∘=−30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of Δ?rxnΔGrxn in a biological cell in which [ATP]=5.0 mM,[ATP]=5.0 mM, [ADP]=0.10 mM,[ADP]=0.10 mM, and [HPO2−4]=5.0 mM.[HPO42−]=5.0 mM. Δ?rxn=ΔGrxn= kJ/mol
ΔG° indicates the change in the standard free energy as a reactant is converted to product. Given what you know about these values, which reaction below is the most favorable?A. ADP + Pi → ATP ΔG° = +7.3 kcal/moleB. glucose 1-phosphate → glucose 6-phosphate ΔG° = −1.7 kcal/moleC. glucose + fructose → sucrose ΔG° = +5.5 kcal/moleD. glucose → CO2 + H2O ΔG° = −686 kcal/mole
Why ATP is known as “Energy Currency”? Although there is many other high energy compounds present. Please explain keeping in view of other high energy compounds
The oxidation of 1 mol of glucose supplies enough metabolic energy to form 36 mol of ATP. Oxidation of 1 mol of a typical dietary fat like tristearin (C57H116O6) yields enough energy toform 458 mol of ATP. How many molecules of ATP can form per gram of (a) glucose; (b) tristearin?