Homework Answers
Glycogen Phosphorylase can be activated by AMP, when the AMP con. Increase during exercise and energy demand also increase that time AMP-activated the glycogen phosphorylation b by changing the conformation from a tense to relax form.
Ans AMP
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In its non-phosphorylated state, glycogen phosphorylase can be activated by which of the following molecules? 0...
1. Which of the following is true regarding glycogen metabolism? a. Glycogen synthase is activated by...
1. Which of the following is true regarding glycogen metabolism? a. Glycogen synthase is activated by phosporylation. b. Glycogen phosphorylase kinase activates glycogen phosphorylase through phosphorylation. c. The activation of PKA is downstream of insulin signaling in muscle cells. d. Glycogen phosphorylase releases free glucose from the ends of glycogen.
Q5. The phosphorylase enzyme, which is involved in breakdown of glycogen to glucose, is controlled by...
Q5. The phosphorylase enzyme, which is involved in breakdown of glycogen to glucose, is controlled by both allosteric mechanisms and posttranslational modification. A) Describe how the T to R transition and activity of glycogen phosphorylase would change under the following conditions: i) high AMP levels and activation of phosphoprotein phosphatase, ii) activation of phosphorylase kinase, ili) activation of phosphorylase kinase and high glucose levels. B) What properties would an uncompetitive inhibitor of glycogen phosphorylase have, what would the Lineweaver Burk...
Arrange in proper order the events of the signal-transduction cascade for glycogen degradation in muscle. Muscle...
Arrange in proper order the events of the signal-transduction cascade for glycogen degradation in muscle. Muscle contraction begins. Phosphorolysis of glycogen yields glucose l-phosphate. Answer Bank Phosphorylase kinase is phosphorylated on its and a subunits. Intracellular CAMP levels increase, which activates protein kinase A. Epinephrine is released and binds to muscle ß-adrenergic receptors. The stimulatory G, protein dissociates and activates adenylate cyclase. Phosphorylase kinase is partly activated by binding Ca2+ Glycogen phosphorylase b is converted to glycogen phosphorylase a.
Biochemistry question Glycogen phosphorylase is able to binds glucose molecules, which acts as a competitive inhibitor...
Biochemistry question Glycogen phosphorylase is able to binds glucose molecules, which acts as a competitive inhibitor of the enzyme. What is the physiological advantage of this?
Which of these enzymes is correctly paired with one of its immediate products? a. Glycogen phosphorylase:...
Which of these enzymes is correctly paired with one of its immediate products? a. Glycogen phosphorylase: Glucose 6-P b. Fatty acid synthase: Oleate c. HMG CoA Reductase: HMG CoA d. Debranching enzyme: Free glucose
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...
€ → C .ap2020.collegeboard.org/Praott-aa857320- glucagon (a) A cell where PKB is always active has a mutation...
€ → C .ap2020.collegeboard.org/Praott-aa857320- glucagon (a) A cell where PKB is always active has a mutation that results in the permanent activation of GSK3. Based on the information in Figure 2, predict the effect of this mutation on the activity of glycogen synthase. (b) Justify your prediction in part (a). Describe the process that results in the activation of multiple copies of PKB in response to the binding of a single molecule of insulin to its receptor. (d) Explain why...
Which of the following enzymes and its respective pathway are activated as a result of glucagon...
Which of the following enzymes and its respective pathway are activated as a result of glucagon binding to its receptor in adipose tissue? glycogen phosphorylase and glycogen degradation phosphofructokinase 1 and glycolysis hormone sensitive (triacylglycerol) lipase and polysis fructose 16 bisphosphatase and gluconeogeness glycogen synthase and glycogen synthesis
Question 20 (1 point) Which carbons of the original glucose are phosphorylated in the two molecules...
Question 20 (1 point) Which carbons of the original glucose are phosphorylated in the two molecules of glyceraldehyde 3 phosphate? 1 & 2 5&6 1&6 3 & 4 1&4
10.Which statement regarding the transcriptional regulation of PEP carboxykinase is false A. The promoter region of...
10.Which statement regarding the transcriptional regulation of PEP carboxykinase is false A. The promoter region of the PEP carboxykinase gene has binding sites for more than a dozen transcription factors B. Transcription and degradation are the primary means of regulating PEP carboxykinase gene C . A sterol regulatory binding element protein decrease expression of the PEP carboxykinase gene D. Insulin increase expression of the PEP carboxykinase gene 11. Glycogenesis - A. Occurs only in the liver and muscle B. Begins...
Q5. The phosphorylase enzyme, which is involved in breakdown of glycogen to glucose, is controlled by both allosteric mechanisms and posttranslational modification. A) Describe how the T to R transition and activity of glycogen phosphorylase would change under the following conditions: i) high AMP levels and activation of phosphoprotein phosphatase, ii) activation of phosphorylase kinase, ili) activation of phosphorylase kinase and high glucose levels. B) What properties would an uncompetitive inhibitor of glycogen phosphorylase have, what would the Lineweaver Burk...
Arrange in proper order the events of the signal-transduction cascade for glycogen degradation in muscle. Muscle contraction begins. Phosphorolysis of glycogen yields glucose l-phosphate. Answer Bank Phosphorylase kinase is phosphorylated on its and a subunits. Intracellular CAMP levels increase, which activates protein kinase A. Epinephrine is released and binds to muscle ß-adrenergic receptors. The stimulatory G, protein dissociates and activates adenylate cyclase. Phosphorylase kinase is partly activated by binding Ca2+ Glycogen phosphorylase b is converted to glycogen phosphorylase a.
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...
€ → C .ap2020.collegeboard.org/Praott-aa857320- glucagon (a) A cell where PKB is always active has a mutation that results in the permanent activation of GSK3. Based on the information in Figure 2, predict the effect of this mutation on the activity of glycogen synthase. (b) Justify your prediction in part (a). Describe the process that results in the activation of multiple copies of PKB in response to the binding of a single molecule of insulin to its receptor. (d) Explain why...
Which of the following enzymes and its respective pathway are activated as a result of glucagon binding to its receptor in adipose tissue? glycogen phosphorylase and glycogen degradation phosphofructokinase 1 and glycolysis hormone sensitive (triacylglycerol) lipase and polysis fructose 16 bisphosphatase and gluconeogeness glycogen synthase and glycogen synthesis
Question 20 (1 point) Which carbons of the original glucose are phosphorylated in the two molecules of glyceraldehyde 3 phosphate? 1 & 2 5&6 1&6 3 & 4 1&4
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