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a. C. 14. Which of the following is the starting material for the Cori cycle? lactate...
In the Cori cycle, when glucose is degraded by glycolysis to lactate in muscle, the lactate...
In the Cori cycle, when glucose is degraded by glycolysis to
lactate in muscle, the lactate is excreted into the blood and
returns to the liver where it is converted back into glucose by
gluconeogenesis. For each enzyme below, identify whether it is
involved in the glycolysis pathyway, gluconeogenesis pathway, both
pathways or neither pathway.
n the Cori cycle, when glucose is degraded by glycolysis to lactate in muscle the lactate is excreted into MapdEb the blood and returns to...
15. How many of the fatty acids which the body needs is it unable to synthesize?...
15. How many of the fatty acids which the body needs is it unable to synthesize? b. 2 c. 3 d. 4 a. 1
12) Consider the conversion of pyruvate to lactate. Which statement is TRUE? OO OH 0 +...
12) Consider the conversion of pyruvate to lactate. Which statement is TRUE? OO OH 0 + CHU - C-CH0 pyruvate CH = CH-CH0 lactate a) It is the preparatory step to the creation of acetyl CoA and the release of CO2 b) It is the isomerization that allows glycolysis to occur (→ CH.CHOH + CO2). e) It is the only way to consume electrons under anaerobic conditions. d) It is a "fermentation step which makes ethanol as an alternative fuel....
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?...
6. In question 5, what is the most important reaction involved in formation of lactate? A)...
6. In question 5, what is the most important reaction involved in formation of lactate? A) dihydroxyacetone phosphate glycerol 3-phosphate D) pyruvate → lactate B) oxaloacetate → malate E) isocitrate → a-ketoglutarate C) glucose 6-phosphate → fructose 6-phosphate 7. During the process in question 5 (the rapid rise in lactate concentration), the NADH must be reoxidized to NAD+. Which of the following enzymes will be most affected if NADH is not reoxidized? A) Pyruvate kinase. C) Phosphofructokinase-1. E) aldolase. B)...
What compound serves as the starting material for the biosynthesis of fatty acids and is also...
What compound serves as the starting material for the biosynthesis of fatty acids and is also a key intermediate in fatty acid metabolism? a. carnitine b. glucose c. bile salt d. acetyl CoA e. lactate
1. 2. 3 The Cori cycle involves which of the following processes? (select all that apply)...
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The Cori cycle involves which of the following processes? (select all that apply) gluconeogenesis urea cycle citric acid cycle glycolysis (aerobic conditions) glycolysis (anaerobic conditions) transamination 0 beta-oxidation Which of the following is the electron carrier produced in the pentose phosphate pathway? FADH2 NADPH ubiquinone cytochrome C NADH Attaching coenzyme A to a fatty acid at the beginning of beta-oxidation requires: 2 ATP equivalents 1 ATP equivalent 3 ATP equivalents 4 ATP equivalents
9. Which of the listed enzymes of the TCA cycle is regulated by phosphorylation/dephosphorylation cycle ?...
9. Which of the listed enzymes of the TCA cycle is regulated by phosphorylation/dephosphorylation cycle ? : a. isocitrate dehydrogenase b. succinate dehydrogenase c. malate dehydrogenase d. a-ketoglutarate dehydrogenase complex e. citrate synthase 10. Name the enzyme catalyzing the following reaction: COOH + GTP - PEP + CO2 + GDP C=0 CH2 COOH a. PEP carboxykinase b. pyruvate kinase d. pyruvate carboxylase c. malic enzyme 11. Name the enzyme that catalyzes the reaction: glyoxylate + CH3CO-SCOA -- → malate +...
1. If acetyl-CoA is not metabolized by the citrate cycle, its most likely metabolic fate is...
1. If acetyl-CoA is not metabolized by the citrate cycle, its most likely metabolic fate is a is used during glycolysis. b it is use to synthesize H2S. c is used to synthesize amino acids. d is used to synthesize fatty acids. e is transported across the cell membrane. 2. How is the pyruvate dehydrogenase enzyme regulated? a product inhibition b pH and the protonation state of the active site c proteolysis d covalent modification e pH and enzyme conformation...
Please help and explain answers! 1. In a series of chemical reactions, glucose is first converted...
Please help and explain answers! 1. In a series of chemical reactions, glucose is first converted into __________. a) pyruvate b) glycerol c) acetyl CoA 2. In the process of glycose breaking down, hydrogen and electrons are carried by coenzymes made from the ___. a) B vitamin biotin b) B vitamin niacin c) vitamin thiamine 3. In the Cori Cycle, the conversion of lactate to glycose by anaerobic glycolysis in the muscle requires energy from ___________. a) acetyl CoA b)...
In the Cori cycle, when glucose is degraded by glycolysis to
lactate in muscle, the lactate is excreted into the blood and
returns to the liver where it is converted back into glucose by
gluconeogenesis. For each enzyme below, identify whether it is
involved in the glycolysis pathyway, gluconeogenesis pathway, both
pathways or neither pathway.
n the Cori cycle, when glucose is degraded by glycolysis to lactate in muscle the lactate is excreted into MapdEb the blood and returns to...
15. How many of the fatty acids which the body needs is it unable to synthesize? b. 2 c. 3 d. 4 a. 1
12) Consider the conversion of pyruvate to lactate. Which statement is TRUE? OO OH 0 + CHU - C-CH0 pyruvate CH = CH-CH0 lactate a) It is the preparatory step to the creation of acetyl CoA and the release of CO2 b) It is the isomerization that allows glycolysis to occur (→ CH.CHOH + CO2). e) It is the only way to consume electrons under anaerobic conditions. d) It is a "fermentation step which makes ethanol as an alternative fuel....
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?...
6. In question 5, what is the most important reaction involved in formation of lactate? A) dihydroxyacetone phosphate glycerol 3-phosphate D) pyruvate → lactate B) oxaloacetate → malate E) isocitrate → a-ketoglutarate C) glucose 6-phosphate → fructose 6-phosphate 7. During the process in question 5 (the rapid rise in lactate concentration), the NADH must be reoxidized to NAD+. Which of the following enzymes will be most affected if NADH is not reoxidized? A) Pyruvate kinase. C) Phosphofructokinase-1. E) aldolase. B)...
1.
2.
3
The Cori cycle involves which of the following processes? (select all that apply) gluconeogenesis urea cycle citric acid cycle glycolysis (aerobic conditions) glycolysis (anaerobic conditions) transamination 0 beta-oxidation Which of the following is the electron carrier produced in the pentose phosphate pathway? FADH2 NADPH ubiquinone cytochrome C NADH Attaching coenzyme A to a fatty acid at the beginning of beta-oxidation requires: 2 ATP equivalents 1 ATP equivalent 3 ATP equivalents 4 ATP equivalents
9. Which of the listed enzymes of the TCA cycle is regulated by phosphorylation/dephosphorylation cycle ? : a. isocitrate dehydrogenase b. succinate dehydrogenase c. malate dehydrogenase d. a-ketoglutarate dehydrogenase complex e. citrate synthase 10. Name the enzyme catalyzing the following reaction: COOH + GTP - PEP + CO2 + GDP C=0 CH2 COOH a. PEP carboxykinase b. pyruvate kinase d. pyruvate carboxylase c. malic enzyme 11. Name the enzyme that catalyzes the reaction: glyoxylate + CH3CO-SCOA -- → malate +...
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