Hydrolysis of ATP is:
endothermic
has a positive ∆G value
must be coupled to an energetically favorable reaction
none of the above
Please read this statement
Hydrolysis yields -30.5 kJ/mol. This energy can be applied to chemical reactions that are energetically unfavorable otherwise to make them be favorable. This is accomplished not by the direct transfer of energy from ATP to another molecule, but instead by coupling (combining) the hydrolysis of ATP to the reaction. Consider a hypothetical reaction
So option third would be right answer
must be coupled to an energetically favorable reaction
Hydrolysis of ATP is: endothermic has a positive ∆G value must be coupled to an energetically...
The reaction converting glycerol to glycerol-3-phosphate is energetically unfavorable by 9.2 kJ. The reaction of ATP with water to yield ADP, hydrogen phosphate ion, and hydrogen ion is energetically favorable by 30.5 kJ. These reactions are coupled so that the overall process is energetically favorable. What is ΔG for the overall process?
Considering the energy changes associated with the individual reactions below, which reaction can be coupled with the hydrolysis of ATP to generate a coupled reaction that is energetically favorable? Energy. change -7.3 kcal/mol ATP + H20 → ADP + HPO42- succinyl CoA + H20 → succinate + HSCOA + -9.4 HPO42- fructose 1,6-bisphosphate + H20 → fructose 6- kcal/mol -3.9 kcal/mol phosphate + HPO42- 1,3-bisphosphoglycerate + H2O → 3- phosphoglycerate + HPO42- -11.8 kcal/mol A) Succinate + HSCOA + HPO42-→...
Adenosine
triphosphate (ATP) is the main \"energy currency\" used in cells.
ATP hydrolysis is coupled with unfavorable reactions, making the
net change in energy for the set of reactions less than zero
(favorable). Although ATP is the main energy currency, other
molecules, such as acetyl-CoA can fulfill this role and take part
in coupled reactions. Which of the following groups are present in
acetyl-CoA? Select five groups.
ATP hydrolysis and the endergonic reaction that is coupled to it are usually represented as two separate equations. Explain why, if these where indeed two separate reactions, ATP hydrolysis will not be able to power the endergonic reaction? Does the answer have anything to do with the fact that ATP, although exergonic, is an incredibly stable molecule and will react slowly without the presence of an enzyme?
Adenosine triphosphate (ATP) is the main "energy currency" used in cells. ATP hydrolysis is coupled with unfavorable reactions, making the net change in energy for the set of reactions less than zero (favorable). Although ATP is the main energy currency, other molecules can fulfill this role and take part in coupled reactions. Determine whether each of the phrases or examples describes a thioester, reduced cofactor, or phosphorylated compound: Acetyl CoA, Ubiquinol, Phosphocreatine, the Sulfur-Carbon bond is hydrolyzed, These compounds yield...
The value of the standard free energy (∆G°’) for the hydrolysis of ATP (ATP + H2O -> ADP + Pi) is relatively difficult to determine because of the small concentration of ATP remaining at equilibrium. The value can be determined from the equilibrium constant of two related chemical reactions. Glucose-6-phosphate + H2O -> glucose + Pi ; k’eq = 270 ATP + glucose -> ADP + glucose-6-phosphate ; K’eq = 890 From this information, calculate the standard free energy of...
1. In a cell, a thermodynamically unfavorable process can occur if the process is coupled to a thermodynamically favorable process. the process is thermodynamically favorable outside the cell. an enzyme gives energy to the reacting substances. the cell as a whole is close to equilibrium. 2. In an active transport protein, ATP hydrolysis creates a channel through the membrane. ATP uses the protein to move across the membrane. ATP hydrolysis causes the protein to change shape. ATP carries a substance...
If the delta G°¢ for ATP hydrolysis is –31 kJ/mol and the delta G°¢ for phosphoenolpyruvate hydrolysis is –62 kJ/mol, what is the DG°¢ for the phosphorylation of ADP by phosphoenolpyruvate? A) –93 kJ/mol B) –31 kJ/mol C) +31 kJ/mol D) +93 kJ/mol E) none of the above Please provide explanation of how to solve this question, if possible include the reactions, thank you so much
answer questions
15) An apoenzyme + cofactor(s) - a) Inhibitor b) active site c) substrate d) holoenzyme 16) Aspartate-transcarbamylase is an enveloved in a pathway that may produces molecule called Cytidine triphosphate. Cytidine triphosphate can bind to anot t o this enzyme, rendering the active site nonfunctional. This is an example of a) ATP hydrolysis b) competitive inhibition c) feedback inhibition d) allosteric activation 17) Which of the following is false regarding fermentation? a) fermentation occurs in the absence of...
We have seen all term that cells use the hydrolysis of high energy phosphate from ATP to make metabolic reactions thermodynamically favorable. Whereas most enzymes that utilize ATP hydrolyze between the b and g phosphates (yielding ADP + Pi), some enzymes hydrolyze ATP between the a and b phosphates (yielding AMP and PPi). ∆G°’ of phosphate hydrolysis is -31 kJ/mol for ATP + H2O --> ADP + Pi, and ∆G°’ of phosphate hydrolysis is -46.5 kJ/mol for ATP + H2O...