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The reaction catalysed by pyruvate kinase is: K'eg 3.63 x 105 Phosphoenolpyruvate + ADP -> pyruvate ATP a) Calculate the AG°" for this reaction. Show your working. 3 marks b) The hydrolysi...
Question 1 - Linked Reactions (10 marks) The reaction catalysed by pyruvate kinase is: Phosphoenolpyruvate+ ADPpyruvateATP Keg 3.63 x 105 a) Calculate the AG" for this reaction. Show your work...
Question 1 - Linked Reactions (10 marks) The reaction catalysed by pyruvate kinase is: Phosphoenolpyruvate+ ADPpyruvateATP Keg 3.63 x 105 a) Calculate the AG" for this reaction. Show your working. 3 marks b) The hydrolysis of ATP has following equation: AG 30.5 kJ/mol Calculate the AG" for the following reaction: Phosphoenolpyruvate pyruvateP Show your working. 2 marks c) At 37 °C, the steady-state concentrations of phosphoenolpyruvate, ATP, and ADP have been measured to be 23 HM, 1.85 mM and 140...
4. Consider the following reaction: ATP + pyruvate phosphoenolpyruvate + ADP Given: Standard free energy of...
4. Consider the following reaction: ATP + pyruvate phosphoenolpyruvate + ADP Given: Standard free energy of hydrolysis for ATP to ADP is -30.5 kJ/mol Standard free energy of hydrolysis for phosphenolpyruvate to pyruvate is -61.9 kJ/mol Calculate AGⓇ and Key for this reaction.
The last step of glycolysis converts phosphoenolpyruvate to pyruvate. phosphoenolpyruvate + ADP " pyruvate + ATP...
The last step of glycolysis converts phosphoenolpyruvate to pyruvate. phosphoenolpyruvate + ADP " pyruvate + ATP A G = -33 kJ/mol (-7.5 kcal/mol) The AG" of the reverse reaction is +31 kJ/mol (+7.5 kcal/mol). Instead of reversing the pyruvate kinase reaction, the step is bypassed in gluconeogenesis. Several steps for the conversion of pyruvate to phosphoenolpyruvate via gluconeogenesis are given. Place the steps in the correct order. You will not place all of the steps. First step
The last step of glycolysis converts phosphoenolpyruvate to pyruvate. phosphoenolpyruvate + ADP - pyruvate + ATP...
The last step of glycolysis converts phosphoenolpyruvate to pyruvate. phosphoenolpyruvate + ADP - pyruvate + ATP A G = -33 kJ/mol (-7.5 kcal/mol) The AG® of the reverse reaction is +31 kJ/mol (+7.5 kcal/mol). Instead of reversing the pyruvate kinase reaction, the step is bypassed in gluconeogenesis. Several steps for the conversion of pyruvate to phosphoenolpyruvate via gluconeogenesis are given. Place the steps in the correct order. You will not place all of the steps. First step Last step Answer...
Pyruvate kinase catalyzes the last reaction in the glycolytic pathway: phosphoenolpyruvate (PEP) + ADP --> pyruvate...
Pyruvate kinase catalyzes the last reaction in the glycolytic
pathway:
phosphoenolpyruvate (PEP) + ADP --> pyruvate + ATP
There are four different mammalian forms of pyruvate kinase. All
catalyze the same reaction, but they differ in their response to
the glycolytic metabolite fructose-1,6-bisphosphate (F16BP).
The activity of two forms of pyruvate kinase was measured at
various concentrations of PEP, as shown below. Activity was
measured in the presence (blue circles) and absence (red circles)
of F16BP.
Pyruvate Kinase Form 1...
5.The following reaction has a ΔG°'--61.9 kJ/mol at 25°C, Phosphoenolpyruvate (PEP) +H2O Pyruvate + Inorganic Phosphate...
5.The following reaction has a ΔG°'--61.9 kJ/mol at 25°C, Phosphoenolpyruvate (PEP) +H2O Pyruvate + Inorganic Phosphate (Pi) (a) Is the reaction favorable under standard biochemical conditions? Explain your answer. (b) What is the equilibrium constant (K) of this reaction at 25°C? In cells the direct hydrolysis of PEP rarely occurs. Rather, the hydrolysis of PEP and the reverse hydrolysis of ATP are coupled (c) w rite out the coupled reaction and determine its ΔG at 25°C The hydrolysis of ATP...
1. 2. 3. 4. Select all that apply. Identify the reaction(s) of glycolysis inhibited by ATP □ glyceraldehyde-3-phosphate → 1,3-bisphosphoglycerate phosphoenolpyruvate +pyruvate 3-phosphoglycerate...
1.
2.
3.
4.
Select all that apply. Identify the reaction(s) of glycolysis inhibited by ATP □ glyceraldehyde-3-phosphate → 1,3-bisphosphoglycerate phosphoenolpyruvate +pyruvate 3-phosphoglycerate ~2-phosphoglycerate 1) fructose-6-phosphate→ fructose-1,6-bisphosphate . glucose glucose-6-phosphate Select all that apply. Alcohol fermentation: consumes ATP as it produces ethanol. O produces carbon dioxide begins as pyruvate is decarboxylated to acetaldehyde in a reaction catalyzed by alcohol dehydrogenase m regenerates NAD requires the enzyme alcohol dehydrogenase, In the figure below, what is the reaction occurring at the location...
If the ΔG°' for ATP hydrolysis is –30 kJ/mol and the ΔG°' for phosphoenolpyruvate hydrolysis is...
If the ΔG°' for ATP hydrolysis is –30 kJ/mol and the ΔG°' for phosphoenolpyruvate hydrolysis is –62 kJ/mol, what is the ΔG°' for the phosphorylation of ADP by phosphoenolpyruvate? a) -32 kJ/mol b) -62 kJ/mol c) +31 kJ/mol d) +92 kJ/mol e) -92 kJ/mol Please provide the appropriate calculation and show the reactions that are involved + the overall reaction. Thank you!
Pyruvate kinase catalyzes the last reaction in the glycolytic pathway: phosphoenolpyruvate (PEP) + ADP --> pyruvate...
Pyruvate kinase catalyzes the last reaction in the glycolytic
pathway:
phosphoenolpyruvate (PEP) + ADP --> pyruvate + ATP
There are four different mammalian forms of pyruvate kinase. All
catalyze the same reaction, but they differ in their response to
the glycolytic metabolite fructose-1,6-bisphosphate (F16BP).
The activity of two forms of pyruvate kinase was measured at
various concentrations of PEP, as shown below. Activity was
measured in the presence (blue circles) and absence (red circles)
of F16BP.
Pyruvate Kinase Form 1...
State the answer and show your work. State units in the answer. 10 points total [F...
State the answer and show your work. State units in the answer. 10 points total [F = 96.485 kJ/V-mole; R = 8.314 J/mole-K] 1. The standard state free energy change (AG°') of hydrolysis for phosphoenolpyruvate (PEP) is -62.2 kJ/mole. The standard state free energy change of hydrolysis for ATP is -30.5 kJ/mole. What is the standard state free energy change for the following coupled reaction? PEP + ADP ---------> Pyruvate + ATP 2. In glycolysis, the standard state free energy...
Question 1 - Linked Reactions (10 marks) The reaction catalysed by pyruvate kinase is: Phosphoenolpyruvate+ ADPpyruvateATP Keg 3.63 x 105 a) Calculate the AG" for this reaction. Show your working. 3 marks b) The hydrolysis of ATP has following equation: AG 30.5 kJ/mol Calculate the AG" for the following reaction: Phosphoenolpyruvate pyruvateP Show your working. 2 marks c) At 37 °C, the steady-state concentrations of phosphoenolpyruvate, ATP, and ADP have been measured to be 23 HM, 1.85 mM and 140...
4. Consider the following reaction: ATP + pyruvate phosphoenolpyruvate + ADP Given: Standard free energy of hydrolysis for ATP to ADP is -30.5 kJ/mol Standard free energy of hydrolysis for phosphenolpyruvate to pyruvate is -61.9 kJ/mol Calculate AGⓇ and Key for this reaction.
The last step of glycolysis converts phosphoenolpyruvate to pyruvate. phosphoenolpyruvate + ADP " pyruvate + ATP A G = -33 kJ/mol (-7.5 kcal/mol) The AG" of the reverse reaction is +31 kJ/mol (+7.5 kcal/mol). Instead of reversing the pyruvate kinase reaction, the step is bypassed in gluconeogenesis. Several steps for the conversion of pyruvate to phosphoenolpyruvate via gluconeogenesis are given. Place the steps in the correct order. You will not place all of the steps. First step
The last step of glycolysis converts phosphoenolpyruvate to pyruvate. phosphoenolpyruvate + ADP - pyruvate + ATP A G = -33 kJ/mol (-7.5 kcal/mol) The AG® of the reverse reaction is +31 kJ/mol (+7.5 kcal/mol). Instead of reversing the pyruvate kinase reaction, the step is bypassed in gluconeogenesis. Several steps for the conversion of pyruvate to phosphoenolpyruvate via gluconeogenesis are given. Place the steps in the correct order. You will not place all of the steps. First step Last step Answer...
Pyruvate kinase catalyzes the last reaction in the glycolytic
pathway:
phosphoenolpyruvate (PEP) + ADP --> pyruvate + ATP
There are four different mammalian forms of pyruvate kinase. All
catalyze the same reaction, but they differ in their response to
the glycolytic metabolite fructose-1,6-bisphosphate (F16BP).
The activity of two forms of pyruvate kinase was measured at
various concentrations of PEP, as shown below. Activity was
measured in the presence (blue circles) and absence (red circles)
of F16BP.
Pyruvate Kinase Form 1...
5.The following reaction has a ΔG°'--61.9 kJ/mol at 25°C, Phosphoenolpyruvate (PEP) +H2O Pyruvate + Inorganic Phosphate (Pi) (a) Is the reaction favorable under standard biochemical conditions? Explain your answer. (b) What is the equilibrium constant (K) of this reaction at 25°C? In cells the direct hydrolysis of PEP rarely occurs. Rather, the hydrolysis of PEP and the reverse hydrolysis of ATP are coupled (c) w rite out the coupled reaction and determine its ΔG at 25°C The hydrolysis of ATP...
1.
2.
3.
4.
Select all that apply. Identify the reaction(s) of glycolysis inhibited by ATP □ glyceraldehyde-3-phosphate → 1,3-bisphosphoglycerate phosphoenolpyruvate +pyruvate 3-phosphoglycerate ~2-phosphoglycerate 1) fructose-6-phosphate→ fructose-1,6-bisphosphate . glucose glucose-6-phosphate Select all that apply. Alcohol fermentation: consumes ATP as it produces ethanol. O produces carbon dioxide begins as pyruvate is decarboxylated to acetaldehyde in a reaction catalyzed by alcohol dehydrogenase m regenerates NAD requires the enzyme alcohol dehydrogenase, In the figure below, what is the reaction occurring at the location...
Pyruvate kinase catalyzes the last reaction in the glycolytic
pathway:
phosphoenolpyruvate (PEP) + ADP --> pyruvate + ATP
There are four different mammalian forms of pyruvate kinase. All
catalyze the same reaction, but they differ in their response to
the glycolytic metabolite fructose-1,6-bisphosphate (F16BP).
The activity of two forms of pyruvate kinase was measured at
various concentrations of PEP, as shown below. Activity was
measured in the presence (blue circles) and absence (red circles)
of F16BP.
Pyruvate Kinase Form 1...
State the answer and show your work. State units in the answer. 10 points total [F = 96.485 kJ/V-mole; R = 8.314 J/mole-K] 1. The standard state free energy change (AG°') of hydrolysis for phosphoenolpyruvate (PEP) is -62.2 kJ/mole. The standard state free energy change of hydrolysis for ATP is -30.5 kJ/mole. What is the standard state free energy change for the following coupled reaction? PEP + ADP ---------> Pyruvate + ATP 2. In glycolysis, the standard state free energy...
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