A non-spontaneous reaction may be driven by coupling it to a reaction that is spontaneous. The...
A non-spontaneous reaction may be driven by coupling it to a reaction that is spontaneous. The formation of glutamine from glutamate and ammonium ions require 14.2 kJ/mol of energy input. It is driven by the hydrolysis of ATP to ADP mediated by the enzyme glutamine synthetase.
(a) Given that the change in Gibbs energy for the hydrolysis of ATP corresponds to ΔG = -46 kJ/mol under conditions in a typical cell.
(b) How many mols of ATP must be hydrolyzed to form 1 mol glutamine?
Homework Answers
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A non-spontaneous reaction may be driven by coupling it to a
reaction that is spontaneous. The...
A critical reaction in the production of energy to do work or drive chemical reactions in...
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) + H,O(1) ADP(aq) + HPO- (aq) for which AG = -30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AG xn in a biological cell in which [ATP] = 5.0 mm, (ADP) = 0.10 mM, and (HPO 1 - 5.0 mM. AG...
A critical reaction in the production of energy to do work or drive chemical reactions in...
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
ATP(aq)+ H2O(l)
ADP(aq) + H2PO4(aq)
for which ΔG°rxn = –30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate
the value of ΔGrxn in a biological cell in which [ATP] = 5.0 mM,
[ADP] = 0.80 mM, and [HPO42–] = 5.0 mM.
Grxn
= ___ KJ/mol
Is the hydrolysis...
Adenosine triphophste, ATP, is used to store energy within biological systems. It releases that energy by...
Adenosine triphophste, ATP, is used to store energy within biological systems. It releases that energy by losing a terminal phosphate group, Pi, to form adenosine diphophate, ADP, through the hydrolysis reaction. The standard reaction Gibbs energy for hydrolysis of ATP to ADP is + 10 kJ mol at 298K. This assumes that the concentration of hydrogen ions is 1 mol/ L. a) In biochemistry, it is common practice to assume an alternative, and more realistic, standard state for pH=7. What...
The enzyme hexokinase catalyzes the following reaction: Glucose + ATP ↔ Glucose 6-phosphate + ADP For...
The enzyme hexokinase catalyzes the following reaction: Glucose + ATP ↔ Glucose 6-phosphate + ADP For this reaction, ΔG° = +16.7 kJ/mol a. Calculate the equilibrium constant for this reaction at 25 °C. Is this reaction spontaneous under standard conditions at this temperature? Calculate the ΔG if the reaction temperature was 25 °C and the concentrations are: glucose, 55.0 mM,; ATP, 5.00 mM; ADP, 1.00 mM; and glucose 6-Phosphate, 0.100 mM. Would the reaction be spontaneous under the conditions of...
the enzyme hexokinase can catalyze the following reaction: fructose + ATP -> fructose 6 phosphate +...
the enzyme hexokinase can catalyze the following
reaction:
fructose + ATP -> fructose 6 phosphate + adp
if the deltaG of hydrolysis of fructose 6 phosphate to
fructose + Pi is -13.8 kj/mol and hydrolysis of atp to adp + pi is
-30kj/mol, calculate Keq for the reaction above (R = 8.31 j mol-1
K-1, T = 298 k
3a. The enzyme hexokinase can catalyze the following reaction: Fructose + ATP → Fructose-6-phosphate + ADP If the ΔGo of hydrolysis...
please help! thanks TABLE 12-4 Standard Free Energy Change for Phosphate Hydrolysis Compound AGⓇ' (kJ. mol-')...
please help! thanks
TABLE 12-4 Standard Free Energy Change for Phosphate Hydrolysis Compound AGⓇ' (kJ. mol-') Phosphoenolpyruvate -61.9 1,3-Bisphosphoglycerate -49.4 ATP → AMP + PP, -45.6 Phosphocreatine -43.1 ATP ADP + P -30.5 Glucose-1-phosphate -20.9 PP, 2P, -19.2 Glucose-6-phosphate -13.8 Glycerol-3-phosphate -9.2 thioester bond AGⓇ' = -31.5 kJ•mol-1 H20 O CH3 -C-s-CoA I CH3 -C-0- + COA-SH Acetyl-CoA The formation of acetyl CoA from acetate is an ATP driven reaction: Acetate + ATP + COA <--> acetyl COA + AMP...
A critical reaction in the production of energy to do work or drive chemical reactions in...
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.....
Thank you!!!
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(1) ADP(aq) + HPO2 (aq) in a biological...
A critical reaction in the production of energy to do work or drive chemical reactions in...
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)+ H,O)ADP(aq) + HPO (aq) for which AGxn =-30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AGn in a biological cell in which 5.0 mM. 5.0 mM, [ADP) 0.10 mM, and [HPO [ATP) -36.4 kJ/mol AGn= Is the hydrolysis of ATP spontaneous...
A critical reaction in the production of energy to do work or drive chemical reactions in...
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 (aq) for which AGix = -30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AGrxn in a biological cell in which [ATP] = 5.0 mm, (ADP) = 0.20 mM, and [HPO2-) = 5.0 mM. AGxn= kJ/mol...
A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the...
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) + H,00) ADP(aq) + HPO- (aq) for which AGix = -30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AG in in a biological cell in which (ATP) = 5.0 mm. (ADP) = 0.70 mM, and [HPO") = 5.0 mm. AG KJ/mol...
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) + H,O(1) ADP(aq) + HPO- (aq) for which AG = -30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AG xn in a biological cell in which [ATP] = 5.0 mm, (ADP) = 0.10 mM, and (HPO 1 - 5.0 mM. AG...
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
ATP(aq)+ H2O(l)
ADP(aq) + H2PO4(aq)
for which ΔG°rxn = –30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate
the value of ΔGrxn in a biological cell in which [ATP] = 5.0 mM,
[ADP] = 0.80 mM, and [HPO42–] = 5.0 mM.
Grxn
= ___ KJ/mol
Is the hydrolysis...
the enzyme hexokinase can catalyze the following
reaction:
fructose + ATP -> fructose 6 phosphate + adp
if the deltaG of hydrolysis of fructose 6 phosphate to
fructose + Pi is -13.8 kj/mol and hydrolysis of atp to adp + pi is
-30kj/mol, calculate Keq for the reaction above (R = 8.31 j mol-1
K-1, T = 298 k
3a. The enzyme hexokinase can catalyze the following reaction: Fructose + ATP → Fructose-6-phosphate + ADP If the ΔGo of hydrolysis...
please help! thanks
TABLE 12-4 Standard Free Energy Change for Phosphate Hydrolysis Compound AGⓇ' (kJ. mol-') Phosphoenolpyruvate -61.9 1,3-Bisphosphoglycerate -49.4 ATP → AMP + PP, -45.6 Phosphocreatine -43.1 ATP ADP + P -30.5 Glucose-1-phosphate -20.9 PP, 2P, -19.2 Glucose-6-phosphate -13.8 Glycerol-3-phosphate -9.2 thioester bond AGⓇ' = -31.5 kJ•mol-1 H20 O CH3 -C-s-CoA I CH3 -C-0- + COA-SH Acetyl-CoA The formation of acetyl CoA from acetate is an ATP driven reaction: Acetate + ATP + COA <--> acetyl COA + AMP...
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.....
Thank you!!!
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(1) ADP(aq) + HPO2 (aq) in a biological...
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)+ H,O)ADP(aq) + HPO (aq) for which AGxn =-30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AGn in a biological cell in which 5.0 mM. 5.0 mM, [ADP) 0.10 mM, and [HPO [ATP) -36.4 kJ/mol AGn= Is the hydrolysis of ATP spontaneous...
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 (aq) for which AGix = -30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AGrxn in a biological cell in which [ATP] = 5.0 mm, (ADP) = 0.20 mM, and [HPO2-) = 5.0 mM. AGxn= kJ/mol...
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) + H,00) ADP(aq) + HPO- (aq) for which AGix = -30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AG in in a biological cell in which (ATP) = 5.0 mm. (ADP) = 0.70 mM, and [HPO") = 5.0 mm. AG KJ/mol...
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