Correctly match the following enzymes with the metabolic pathway they regulate. __ Phosphoenolpyruvate carboxykinase a. Gluconeogenesis...
Correctly match the following enzymes with the metabolic pathway they regulate.
__ Phosphoenolpyruvate carboxykinase a. Gluconeogenesis
__ Pyrubate dehydrogenase complex b. Glycolysis
__ Glycogen Synthase c. Citric Acid Cylcle (Krebs)
__ Pyruvate Carboxylase d. Glycogenolysis
__ Pyruvate Kinase e. Glycogenesis
Homework Answers
Ans-
Phosphoenolpyruvate carboxykinase- a. Gluconeogenesis
Pyrubate dehydrogenase complex - c. Citric Acid Cylcle (Krebs)
Glycogen Synthase- e. Glycogenesis
Pyruvate Carboxylase- d. Glycogenolysis
Pyruvate Kinase - b. Glycolysis
Explanation:
- Phosphoenolpyruvate carboxykinase is an enzyme of gluconeogenesis pathway that converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.
- Pyruvate dehydrogenase complex converts pyruvate into acetyl-CoA, and this complex involves to link the glycolysis pathway to the citric acid cycle.
- Glycogen Synthase or UDP glucose –glycogen glucosyltransferase enzyme converts glucose into glycogen during glycogenesis.
- Pyruvate carboxylase enzyme converts pyruvate to oxaloacetate during gluconeogenesis
- Pyruvate kinase is responsible to transfer of a phosphate group from phosphoenolpyruvate (PEP) to adenosine diphosphate (ADP) during glycolysis.
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Correctly match the following enzymes with the metabolic pathway
they regulate.
__ Phosphoenolpyruvate carboxykinase a. Gluconeogenesis...
Glycolysis and gluconeogenesis are concurrent and complementary metabolic pathways. Which of the following IS NOT TRUE...
Glycolysis and gluconeogenesis are concurrent and complementary metabolic pathways. Which of the following IS NOT TRUE a) glycolysis and gluconeogenesis regulate the availability of glucose in the cell b) all enzymes and intermediates used in glycolysis and gluconeogenesis are the same, glucose, respectively anabolizes acetyl-CoA and pyruvate to glucose. fructose 16P into fructose 6P (final step) in gluconeogenesis uses pathway specific ) glycolysis catabolizes glucose to pyruvate and acetyl-CoA and gluconeogenesis d) the conversion of pyruvate into phosphoenolpyruvate (first step)...
Which pair of opposite enzymes in the glycolysis and gluconeogenesis pathway are not allosterically regulated but...
Which pair of opposite enzymes in the glycolysis and gluconeogenesis pathway are not allosterically regulated but rather regulated by compartmentalization? Select one: a. pyruvate kinase/PEP carboxykinase b. phosphofructokinase 1/fructose-1,6-bisphosphatase c. phosphofructokinase 2/fructose-2,6-bisphosphatase d. hexokinase/glucose-6-phosphatase
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 +...
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. α-ketoglutarate dehydrogenase complex\}c. citrate synthase10. Name the enzyme catalyzing the following reaction:a. PEP carboxykinaseb. pyruvate kinasec. malic enzymed. pyruvate carboxylase11. Name the enzyme that catalyzes the reaction:glyoxylate +CH3CO-SCoA → malate + HSCoAa. malate synthaseb. succinate thiokinasec. aconitased. isocitrate
Describe “hub” molecules acetyl CoA and pyruvate that serve different pathways. Explain metabolic regulation favoring metabolic pathway choices leading to and from hub molecules. Describe how C.A.C. s...
Describe “hub” molecules acetyl CoA and pyruvate that serve
different pathways. Explain metabolic regulation favoring metabolic
pathway choices leading to and from hub molecules. Describe how
C.A.C. serves as a “hub “pathway. Use picture as a reference.
Pyruvate Glucose Fatty acids sterols pyruvate carboxylase Acetyl-CoA PEP carboxykinase Glutamine Citrate Phosphoenolpyruvate (PEP) Proline Arginine Oxaloacetate PEP carboxylase Citric acid cycle a-Ketoglutarate Malate Glutamate Aspartate Asparagine Serine Glycine Cysteine malic enzyme Purines Succinyl-CoA Phenylalanine Pyrimidines Pyruvate Tyrosine Tryptophan Porphyrins heme Figure 16-16...
QUESTION 4 Which of the following enzymes directly converts phosphorylaseb into the more active form, phosphorylase...
QUESTION 4 Which of the following enzymes directly converts phosphorylaseb into the more active form, phosphorylase a? A. CAMP-dependent protein kinase B. phosphorylase kinase C. protein kinase A D. adenylate kinase E phosphoprotein phosphatase The biotin prosthetic group of pyruvate carboxylase is covalently attached to a residue of the enzyme ? A. Vakine B. serine C. lysine D. arginine E. the biotin is attached non-covalently Which of the following serves as the energy source for the metabolic conversion of oxaloacetate...
Match the description to the approptiate cell type gluconeogenesis pathway is unfavorable glycolysis pathway is favorable...
Match the description to the approptiate cell type gluconeogenesis pathway is unfavorable glycolysis pathway is favorable expresses phosphofructokinase y glycerol stimulates the rate of 1. muscle 2. liver cell 3. both 4. neither glucose formation reciprocally regulates glycolysis and gluconeogenesis regulates the rate of expresses pyruvate carboxylase y cannot regulate the rate of expresses fructose 1.6 bisphosphatase Match the description with the process to which it applies transports glucose into mitochondria AMP regulates rate stimulated by high cellular glucose concentration...
Classify each statement as a description of glycolysis, glycogenesis, glycogenolysis, or gluconeogenesis. Glycolysis Glycogenesis Glycogenolysis Gluconeogenesis...
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In an ATP synthase which has 12 copies of the c subunit, how many protons move...
In an ATP synthase which has 12 copies of the c subunit, how many protons move through the enzyme for each one ATP that is synthesized? 44. 4 12. 45. An uncoupler acts by: a. Inhibiting a redox couple b. nhibiting proton pumping complexes. c. nhting oxygen reduction d. Collapsing the proton gradient e. Uncoupling the F and Fo subunits of the ATP synthase GLUCONEOGENESIS The reactions of glycolysis that are replaced by different enzymes in the gluconeogenesis pathway are...
Can someone quick answer/check these questions? Thank you, will rate! (the answers that I have came...
Can someone quick answer/check these questions? Thank you, will rate! (the answers that I have came up with are in bold) Please help 51- Glycogenesis involves the following steps a) isomerisation b) activation c) elongation or coupling d) branching e) all of the above 52 During the breakdown of glycogen, free glucose is formed from A. the reducing end. B. the non-reducing end. C. glucose residues in an a 1-->4 linkage to the chain. D. glucose residues in an...
Glycolysis and gluconeogenesis are concurrent and complementary metabolic pathways. Which of the following IS NOT TRUE a) glycolysis and gluconeogenesis regulate the availability of glucose in the cell b) all enzymes and intermediates used in glycolysis and gluconeogenesis are the same, glucose, respectively anabolizes acetyl-CoA and pyruvate to glucose. fructose 16P into fructose 6P (final step) in gluconeogenesis uses pathway specific ) glycolysis catabolizes glucose to pyruvate and acetyl-CoA and gluconeogenesis d) the conversion of pyruvate into phosphoenolpyruvate (first step)...
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 +...
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. α-ketoglutarate dehydrogenase complex\}c. citrate synthase10. Name the enzyme catalyzing the following reaction:a. PEP carboxykinaseb. pyruvate kinasec. malic enzymed. pyruvate carboxylase11. Name the enzyme that catalyzes the reaction:glyoxylate +CH3CO-SCoA → malate + HSCoAa. malate synthaseb. succinate thiokinasec. aconitased. isocitrate
Describe “hub” molecules acetyl CoA and pyruvate that serve
different pathways. Explain metabolic regulation favoring metabolic
pathway choices leading to and from hub molecules. Describe how
C.A.C. serves as a “hub “pathway. Use picture as a reference.
Pyruvate Glucose Fatty acids sterols pyruvate carboxylase Acetyl-CoA PEP carboxykinase Glutamine Citrate Phosphoenolpyruvate (PEP) Proline Arginine Oxaloacetate PEP carboxylase Citric acid cycle a-Ketoglutarate Malate Glutamate Aspartate Asparagine Serine Glycine Cysteine malic enzyme Purines Succinyl-CoA Phenylalanine Pyrimidines Pyruvate Tyrosine Tryptophan Porphyrins heme Figure 16-16...
QUESTION 4 Which of the following enzymes directly converts phosphorylaseb into the more active form, phosphorylase a? A. CAMP-dependent protein kinase B. phosphorylase kinase C. protein kinase A D. adenylate kinase E phosphoprotein phosphatase The biotin prosthetic group of pyruvate carboxylase is covalently attached to a residue of the enzyme ? A. Vakine B. serine C. lysine D. arginine E. the biotin is attached non-covalently Which of the following serves as the energy source for the metabolic conversion of oxaloacetate...
Match the description to the approptiate cell type gluconeogenesis pathway is unfavorable glycolysis pathway is favorable expresses phosphofructokinase y glycerol stimulates the rate of 1. muscle 2. liver cell 3. both 4. neither glucose formation reciprocally regulates glycolysis and gluconeogenesis regulates the rate of expresses pyruvate carboxylase y cannot regulate the rate of expresses fructose 1.6 bisphosphatase Match the description with the process to which it applies transports glucose into mitochondria AMP regulates rate stimulated by high cellular glucose concentration...
Classify each statement as a description of glycolysis, glycogenesis, glycogenolysis, or gluconeogenesis. Glycolysis Glycogenesis Glycogenolysis Gluconeogenesis Glucose 6-phosphate is the initial reactant. Glycogen is the initial reactant. Pyruvate is the final product. Pyruvate is the initial reactant Glucose 6-phosphate is produced in the first step. Glucose 1-phosphate is produced in the first step through isomerization. This occurs when brain and muscle cells need i mmediate energy. NADH is consumed. L about us careers privacy policy terms of use contact us...
In an ATP synthase which has 12 copies of the c subunit, how many protons move through the enzyme for each one ATP that is synthesized? 44. 4 12. 45. An uncoupler acts by: a. Inhibiting a redox couple b. nhibiting proton pumping complexes. c. nhting oxygen reduction d. Collapsing the proton gradient e. Uncoupling the F and Fo subunits of the ATP synthase GLUCONEOGENESIS The reactions of glycolysis that are replaced by different enzymes in the gluconeogenesis pathway are...
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