A solution of .1M fructose-1,6-bisphosphate is treated at 37degrees C with aldolase and triose phosphate isomerase...
A solution of .1M fructose-1,6-bisphosphate is treated at 37degrees C with aldolase and triose phosphate isomerase under conditions of pH and ionic strength where both enzymes are active. What will be the concentration of glyceraldhyde-3-phosphate when equilibrium is reached?
deltaGo'= +23.8 kJ/mol for fructose-1,6-bisphosphate -> DHAP and GAP
delta Go'= +7.5 kJ/mol for DHAP -> GAP
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A solution of .1M fructose-1,6-bisphosphate is treated at
37degrees C with aldolase and triose phosphate isomerase...
QUESTION 19 In glycolysis, fructose 1,6-bisphosphate is converted to two products with a ∆G'° of 23.8...
QUESTION 19 In glycolysis, fructose 1,6-bisphosphate is converted to two products with a ∆G'° of 23.8 kJ/mol. Under what conditions encountered in a normal cell will the free-energy change (∆G) be negative, enabling the reaction to proceed spontaneously to the right? A. Under standard conditions, energy is released to drive the reaction to the right, B. the reaction will not go to the right spontaneously under any conditions because the ∆G'° is positive, C. the reaction will proceed spontaneously to...
2 PLS If aldolase was supplied with fructose-1,6-bisphosphate with a 14C label at C-4, where would the labeled carb...
2 PLS If aldolase was supplied with fructose-1,6-bisphosphate with a 14C label at C-4, where would the labeled carbon be found in the product? The structure of fructose-1,6-bisphosphate (not labeled) is given below. CHOPO, CHOPO, OH dihydroxyacetone phosphate, C-1 dihydroxyacetone phosphate. C-2 dihydroxyacetone phosphate. C-3 glyceraldehyde-3-phosphate. C-1 glyceraldehyde-3-phosphate, C-2 glyceraldehyde-3-phosphate, C-3
A highly regulated reaction in glycolysis involves the addition of a second phosphate to fructose-6-phosphate, which...
A highly regulated reaction in glycolysis involves the addition
of a second phosphate to fructose-6-phosphate, which could be be
written as:
Fructose-6-phostphate + Pi à Fructose-1,6-bisphosphate + H2O
The ∆Go’ for this reaction is +16.8 kJ/mol
In a muscle cell at 37 oC, assume the concentration of
Fructose-6phosphate is 0.014 mM and the concentration of phosphate
is 1 mM.
a. What would be the equilibrium concentration of
fructose-1,6bisphosphate under these conditions?
b. What is Keq for this reaction?
Show...
Question 1 (1 pt): In glycolysis, fructose 1,6-bisphosphate is converted to two products with a standard...
Question 1 (1 pt): In glycolysis, fructose 1,6-bisphosphate is converted to two products with a standard free-energy change (AG) of 23.8 kJ/mol. Under what conditions encountered in a normal cell will the free-energy change (AG) be negative, enabling the reaction to proceed spontaneously to the right? Under standard conditions, enough energy is released to drive the reaction to the right. a. b. The reaction will not go to the right under any conditions because AGo is positive. When there is...
Calvin-Benson Cycle AG0 (kJ/mol) +70.0 Reaction Ribulose-1,5-bisphosphate CO2 H2O 2(3-phosphoglycerate) +H Enzyme Ribulose-1,5-bisphosphate carboxylase oxygenase ЕС...
Calvin-Benson Cycle AG0 (kJ/mol) +70.0 Reaction Ribulose-1,5-bisphosphate CO2 H2O 2(3-phosphoglycerate) +H Enzyme Ribulose-1,5-bisphosphate carboxylase oxygenase ЕС Cofactors Regulation Notes 4,1.1.39 Mg2, cobalamin (B,2) coenzyme-A, NADH H Fe-S clusters, and possibly ATP Ribulose-1,5-bisphosphate (RUBP) behaves as an inhibitor by strongly binding to the activated form of the enzyme (ЕСM) Rubisco activase catalyzes the dissociation of RuBP from ECM Rubisco is very inefficient as a carboxylase It is probably the most abundant protein on earth; up to 50% of leaf protein is...
Question 89 Gluconeogenesis is the A) Result of amylase activity B) Formation of glycogen C) Formation...
Question 89 Gluconeogenesis is the A) Result of amylase activity B) Formation of glycogen C) Formation of starches D) Formation of glucose from simple two and three-carbon precursors Question 90 The only known regulatory mechanism for pyruvate carbora A) Activation by acetyl Co4 B) Activation by phosphorylation C) Activation by CAMP D) Activation by NADH 20 5 Question 87 Isozymes are enzymes A) From one species that catalyze the same reaction B) From different species that catalyze the same reaction...
2 PLS If aldolase was supplied with fructose-1,6-bisphosphate with a 14C label at C-4, where would the labeled carbon be found in the product? The structure of fructose-1,6-bisphosphate (not labeled) is given below. CHOPO, CHOPO, OH dihydroxyacetone phosphate, C-1 dihydroxyacetone phosphate. C-2 dihydroxyacetone phosphate. C-3 glyceraldehyde-3-phosphate. C-1 glyceraldehyde-3-phosphate, C-2 glyceraldehyde-3-phosphate, C-3
A highly regulated reaction in glycolysis involves the addition
of a second phosphate to fructose-6-phosphate, which could be be
written as:
Fructose-6-phostphate + Pi à Fructose-1,6-bisphosphate + H2O
The ∆Go’ for this reaction is +16.8 kJ/mol
In a muscle cell at 37 oC, assume the concentration of
Fructose-6phosphate is 0.014 mM and the concentration of phosphate
is 1 mM.
a. What would be the equilibrium concentration of
fructose-1,6bisphosphate under these conditions?
b. What is Keq for this reaction?
Show...
Question 1 (1 pt): In glycolysis, fructose 1,6-bisphosphate is converted to two products with a standard free-energy change (AG) of 23.8 kJ/mol. Under what conditions encountered in a normal cell will the free-energy change (AG) be negative, enabling the reaction to proceed spontaneously to the right? Under standard conditions, enough energy is released to drive the reaction to the right. a. b. The reaction will not go to the right under any conditions because AGo is positive. When there is...
Calvin-Benson Cycle AG0 (kJ/mol) +70.0 Reaction Ribulose-1,5-bisphosphate CO2 H2O 2(3-phosphoglycerate) +H Enzyme Ribulose-1,5-bisphosphate carboxylase oxygenase ЕС Cofactors Regulation Notes 4,1.1.39 Mg2, cobalamin (B,2) coenzyme-A, NADH H Fe-S clusters, and possibly ATP Ribulose-1,5-bisphosphate (RUBP) behaves as an inhibitor by strongly binding to the activated form of the enzyme (ЕСM) Rubisco activase catalyzes the dissociation of RuBP from ECM Rubisco is very inefficient as a carboxylase It is probably the most abundant protein on earth; up to 50% of leaf protein is...
Question 89 Gluconeogenesis is the A) Result of amylase activity B) Formation of glycogen C) Formation of starches D) Formation of glucose from simple two and three-carbon precursors Question 90 The only known regulatory mechanism for pyruvate carbora A) Activation by acetyl Co4 B) Activation by phosphorylation C) Activation by CAMP D) Activation by NADH 20 5 Question 87 Isozymes are enzymes A) From one species that catalyze the same reaction B) From different species that catalyze the same reaction...
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