All of the following are precursor metabolites produced during EMP except
phosphoenolpyruvate (PEP).
glyceraldehyde-3-phosphate.
oxaloacetate.
pyruvate.
Fructose-6-phosphate.
oxaloacetate.
All of the following are precursor metabolites produced during EMP except oxaloacetate. Oxaloacetate is a precursor metabolite produced during the TCA cycle.
All of the following are precursor metabolites produced during EMP except phosphoenolpyruvate (PEP). glyceraldehyde-3-phosphate. oxaloacetate. pyruvate....
______________ generated during the pentose phosphate pathway is essential for making ___________ which is the precursor for the aromatic amino acids. Ribose 5-phosphate; glutamate Phosphoenolpyruvate; chorismate Erythrose 4-phosphate; pyruvate Citrate; oxaloacetate Erythrose 4-phosphate; chorismate
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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...
Tautomerization of enolpyruvate to pyruvate occurs in step 10 of glycolysis. If DG°’ = -46 kJ/mol, what is the ratio of pyruvate to enolpyruvate at equilibrium? Steady-State Concentrations of Glycolytic Metabolites in Erythrocytes Metabolite mM Glucose 5.0 Glucose-6-phosphate 0.083 Fructose-6-phosphate 0.014 Fructose-1,6-bisphosphate 0.031 Dihydroxyacetone phosphate 0.14 Glyceraldehyde-3-phosphate 0.019 1,3-Bisphosphoglycerate 0.001 3-Phosphoglycerate 0.12 2-Phosphoglycerate 0.030 Phosphoenolpyruvate 0.023 Pyruvate 0.051 Lactate 2.9 ATP 1.85 ADP 0.14 Pi 1.0
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...
During the EMP pathway, why would the cell want the pyruvate kinase be positively regulated by high levels of fructose-6-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...
GLYCOLYSIS Glucose-8 phosphate + Glucose 2 Fructose-6-phosphate 3 Fructose-1,6-biphosphate Dihydroxy-acetone-phosphate 5 Glyceraldehyde-3-phosphate VT6 2 (1,3-biphosphoglycerate) 7 3-phosphoglycerate 2-phosphoglycerate 9 phosphoenolpyruvate 10 Lactate Pyruvate Which two reactions of glycolysis requires an investment of ATP energy, and which enzyme catalyzes each reaction? Reaction Number Enzyme Reaction Number Enzyme Which two reactions of glycolysis generate energy in the form of ATP, and which enzyme catalyzes each reaction? Reaction Number Enzyme Reaction Number Enzyme Which glycolytic reaction generates energy in the form of NADH,...
Part A For the following gluconeogenesis reactions, select all of the coupled reactions. NOTE: Pi stands for phosphate. o phosphoenolpyruvate + H20 = 2-phosphoglycerate 0 3-phosphoglycerate + ATP = 1,3-bisphosphoglycerate + ADP o pyruvate + HCO3 + ATP = oxaloacetate + ADP + Pi o fructose-6-phosphate = glucose-6-phosphate
1.Predict the effect of a large amount of acetyl-CoA on the activity of pyruvate dehydrogenase and the rate of glycolysis. Note: pyruvate dehydrogenase is the enzyme that catalyzes the formation of acetyl-CoA from pyruvate. a. Pyruvate dehydrogenase activity will decrease while the rate of glycolysis will increase. b. Both pyruvate dehydrogenase activity and the rate of glycolysis will decrease. c. Pyruvate dehydrogenase activity will increase while the rate of glycolysis will decrease. d. The rate of glycolysis will increase, thereby,...
match the following 1. Fructose 1,6-bisphosphate is converted to Fructose 6- phosphate through this enzyme _____ 2. Synthesis of glucose from noncarbohydrate precursors _____ 3. Stage in which two molecules of ATP are consumed _____ 4. This is formed from pyruvate in yeast and several other microorganisms through fermentation _____ 5. The isomerization of glucose 6-phosphate to fructose 6-phosphate is a coversion of an aldose into a …._____ 6. Pyruvate is converted by pyruvate carboxylase into this intermediate _____ 7....