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The asterisk shows a radiolabeled carbon, by the completion of one round of TCA where is...
OH cr nC-labeled glucose at C6 13C-labeled pyruvate at C3 a) When glucose is enriched with C at C...
OH cr nC-labeled glucose at C6 13C-labeled pyruvate at C3 a) When glucose is enriched with C at C6, it will form pyruvate enriched at C3 (above). The labeled Where does the label exist in succinyl-CoA after the 'C acetyl-CoA is processed in the first round of TCA (after a single action by the first four enzymes in TCA). Circle the atom/atoms where the label exists on the molecule below d pyruvate will be converted into 1'C acetyl-CoA and then...
Assume a cell has just completed glycolysis and the resulting pyruvate has a c-14 radio label...
Assume a cell has just completed glycolysis and the resulting
pyruvate has a c-14 radio label on carbon -1. Highlight the carbon
on the attached pages as it passes through the PDH complex and the
TCA cycle until it is lost as CO2. If only a portion of the carbons
are lost stop highlighting when the CO2 first starts to come off.
ONLY ONE TIME THRU THE CYCLE ON EACH PAGE
2. Repeat question 1 but now assume the radio...
The product of the complete oxidation of carbon in the TCA cycle is: a. oxaloacetate b....
The product of the complete oxidation of carbon in the TCA cycle is: a. oxaloacetate b. acetyl coa c. citrate d. CO2 e. None of the above In addition to glucose which of the following sugars can enter glycosis a. celobiose b. ribose c. galactose d. b & c e. all of the above In anaerobic metabolism, what is the fate of pyruvate produced by glycolysis a. converted to ethanol b. converted to lactate c. converted to acetyl-COA d. a...
1. You have acetate that is isotopically labelled (13C) at carbon 1 and radiolabeled (14C) at carbon...
1. You have acetate that is isotopically labelled
(13C) at carbon 1 and radiolabeled (14C) at
carbon 2. Assume all the acetate gets incorporated into
Acetyl-CoA. Calculate the % of each labelled carbon that
gets released in the first five rounds of the TCA cycle and at what
enzymatic step they get released.
2. Document (on extra pages attached to this sheet)
your work. Note: you don’t have to include
every step if you are clever.
1. You have acetate that is isotopically labelled (c) at...
not sure about reaction 3 and 4 acetyl-CoA COA The reactions of the citric acid cycle...
not sure about reaction 3 and 4
acetyl-CoA COA The reactions of the citric acid cycle are shown in the figure Reactions 1, 3, and 4 are regulation points in the citric acid cycle. 1 citrate oxaloacetate 1 synthase citrate NADH + NAD malate dehydrogenase aconitase 2 malate Which of the molecules inhibits reaction 1? Isocitrate HO 17 fumarase NAD socitrate 3 dehydrogenase S D NADP ADP ОАТР O citrate synthase fumarate FADHI succinate co-ketoglutarate dehydrogenase ci-ketoglutarate NAD dehydrogenase +...
Choose the ONE BEST answer explaining how oxaloacetate and acetyl-CoA levels are balanced to maximize flux...
Choose the ONE BEST answer explaining how oxaloacetate and acetyl-CoA levels are balanced to maximize flux through the citrate cycle when energy charge in the cell is lovw Oxaloacetate is required for mitochondrial shuttle systems, and therefore it makes sense to activate pyruvate carboxylase by ATP and inhibit it by malate. None of the answers are correct. The best way to balance the input of carbon into the citrate cycle is to regulate the production of citrate using vitamins like...
Which sequence of amino acids would likely be found in the interior of a globular protein?...
Which sequence of amino acids would likely be found in the interior of a globular protein? GMWS IEDP HEKR DEAR Which of the following reactions is spontaneous in the forward direction when the reactants are my present in equirnolar amounts ? Glyceraldehyde 3 phosphate e Dihydroxyacetone phosphate creatine phosphate . ADP ATP creatine ADP. 1,3 bisphosphoglycerate 3 phosphoglycerate + ATP glycerol 3-phosphate + ADP = ATP glycerol NADH+ + H+ oxaloacetate NAD+ + malate NAD+ + pyruvate + COA NADH...
1. Which one of the following shows the correct sequence of energy transitions during chemiosmosis? A....
1. Which one of the following shows the correct sequence of energy transitions during chemiosmosis? A. NADH → electron acceptors → proton gradient → ATP synthase → ATP B. NADH → NAD+ → FADH2 → electron acceptors → ATP C. carbohydrates → acetyl CoA → CO2 → proton gradient → ATP D. NAD+ → NADH → protons → ADP → ATP E. glucose → pyruvate → acetyl CoA → NADH → ATP 2. Facultative anaerobes: A. prefer carbon dioxide. B....
I1. Mammals lack the enzyme a. Lactate dehydrogenase b. Pyruvate kinase Alcohol Dehydrogenase c. d. Pyruvate...
I1. Mammals lack the enzyme a. Lactate dehydrogenase b. Pyruvate kinase Alcohol Dehydrogenase c. d. Pyruvate decarboxylase None of the above are correct e. 12. The first reaction of the Krebs cycle combines Oxaloacetate and Acetyl CoA to make Citrate b. a. Malate and NADH to make Citrate a-ketoglutarate and citrate to make CO2 d. c- Succinate and Citrate to make Oxaloacetate 13. The electrons held by NADH and FADH, are donated to the which complexes in the ETC respectively?...
1. Which one of the following shows the correct sequence of energy transitions during chemiosmosis? A. NADH → electron acceptors → proton gradient → ATP synthase → ATP B. NADH → NAD+ → FADH2 → electro...
1. Which one of the following shows the correct sequence of energy transitions during chemiosmosis? A. NADH → electron acceptors → proton gradient → ATP synthase → ATP B. NADH → NAD+ → FADH2 → electron acceptors → ATP C. carbohydrates → acetyl CoA → CO2 → proton gradient → ATP D. NAD+ → NADH → protons → ADP → ATP E. glucose → pyruvate → acetyl CoA → NADH → ATP 2. Facultative anaerobes: A. prefer carbon dioxide. B....
OH cr nC-labeled glucose at C6 13C-labeled pyruvate at C3 a) When glucose is enriched with C at C6, it will form pyruvate enriched at C3 (above). The labeled Where does the label exist in succinyl-CoA after the 'C acetyl-CoA is processed in the first round of TCA (after a single action by the first four enzymes in TCA). Circle the atom/atoms where the label exists on the molecule below d pyruvate will be converted into 1'C acetyl-CoA and then...
Assume a cell has just completed glycolysis and the resulting
pyruvate has a c-14 radio label on carbon -1. Highlight the carbon
on the attached pages as it passes through the PDH complex and the
TCA cycle until it is lost as CO2. If only a portion of the carbons
are lost stop highlighting when the CO2 first starts to come off.
ONLY ONE TIME THRU THE CYCLE ON EACH PAGE
2. Repeat question 1 but now assume the radio...
1. You have acetate that is isotopically labelled
(13C) at carbon 1 and radiolabeled (14C) at
carbon 2. Assume all the acetate gets incorporated into
Acetyl-CoA. Calculate the % of each labelled carbon that
gets released in the first five rounds of the TCA cycle and at what
enzymatic step they get released.
2. Document (on extra pages attached to this sheet)
your work. Note: you don’t have to include
every step if you are clever.
1. You have acetate that is isotopically labelled (c) at...
not sure about reaction 3 and 4
acetyl-CoA COA The reactions of the citric acid cycle are shown in the figure Reactions 1, 3, and 4 are regulation points in the citric acid cycle. 1 citrate oxaloacetate 1 synthase citrate NADH + NAD malate dehydrogenase aconitase 2 malate Which of the molecules inhibits reaction 1? Isocitrate HO 17 fumarase NAD socitrate 3 dehydrogenase S D NADP ADP ОАТР O citrate synthase fumarate FADHI succinate co-ketoglutarate dehydrogenase ci-ketoglutarate NAD dehydrogenase +...
Choose the ONE BEST answer explaining how oxaloacetate and acetyl-CoA levels are balanced to maximize flux through the citrate cycle when energy charge in the cell is lovw Oxaloacetate is required for mitochondrial shuttle systems, and therefore it makes sense to activate pyruvate carboxylase by ATP and inhibit it by malate. None of the answers are correct. The best way to balance the input of carbon into the citrate cycle is to regulate the production of citrate using vitamins like...
Which sequence of amino acids would likely be found in the interior of a globular protein? GMWS IEDP HEKR DEAR Which of the following reactions is spontaneous in the forward direction when the reactants are my present in equirnolar amounts ? Glyceraldehyde 3 phosphate e Dihydroxyacetone phosphate creatine phosphate . ADP ATP creatine ADP. 1,3 bisphosphoglycerate 3 phosphoglycerate + ATP glycerol 3-phosphate + ADP = ATP glycerol NADH+ + H+ oxaloacetate NAD+ + malate NAD+ + pyruvate + COA NADH...
I1. Mammals lack the enzyme a. Lactate dehydrogenase b. Pyruvate kinase Alcohol Dehydrogenase c. d. Pyruvate decarboxylase None of the above are correct e. 12. The first reaction of the Krebs cycle combines Oxaloacetate and Acetyl CoA to make Citrate b. a. Malate and NADH to make Citrate a-ketoglutarate and citrate to make CO2 d. c- Succinate and Citrate to make Oxaloacetate 13. The electrons held by NADH and FADH, are donated to the which complexes in the ETC respectively?...
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