Which statement is true? Epinephrine activates glycogen phosphorylase. Epinephrine increases glycolysis in muscle. Insulin decreases glycogen...
Which statement is true?
Epinephrine activates glycogen phosphorylase.
Epinephrine increases glycolysis in muscle.
Insulin decreases glycogen breakdown by increasing phosphoprotein phosphatase-1 activity.
All of the above
Homework Answers
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Which statement is true?
Epinephrine activates glycogen phosphorylase.
Epinephrine increases glycolysis in muscle.
Insulin decreases glycogen...
In muscle tissue, the ratio of phosphorylase a to phosphorylase b determines the rate of conversion of glycogen to gluco...
In muscle tissue, the ratio of phosphorylase a to phosphorylase b determines the rate of conversion of glycogen to glucose 1-phosphate. Classify how each event affects the rate of glycogen breakdown in isolated muscle tissue. Increased rate ; Decreased rate ; No change Option: addition of phosphorylase b kinase ; addition of a phosphatase inhibitor ; end of fight-or-flight response ; treatment with glucagon ; AMP allosteric binding activates phosphorylase b ; treatment with insulin ; addition of phosphatase PP1...
12. An enzyme, phosphodiesterase, catalyzes the conversion of CAMP to AMP. Using the glycogen control diagram...
12. An enzyme, phosphodiesterase, catalyzes the conversion of CAMP to AMP. Using the glycogen control diagram handed out separately, predict whether activating phosphodiesterase in turn activates or deactivates each of the enzymes below: Deactivates Activates Enzyme phosphorylase kinase glycogen phosphorylase phosphoprotein phosphatase-1 glycogen synthase ロロロロ ロロロロ Thus, when phosphodiesterase is activated, glycogen degradation is glycogen synthesis is activated Odeactivated and O activated Odeactivated. Based on your answers above, which hormone most likely activates phosphodiesterase? Check all that apply. O insulin...
Protein kinase A phosphorylates _____, which then activates _____. A) phosphorylase kinase; glycogen phosphorylase B) protein...
Protein kinase A phosphorylates _____, which then activates _____. A) phosphorylase kinase; glycogen phosphorylase B) protein phosphatase 1; glycogen synthase C) glycogen phosphorylase; phosphoglucomutase D) adenylate cyclase; phosphorylase kinase
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...
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.
U glucagoni, un c. epinephrine; glucagon d. epinephrine; insulin e. glucagon; glycogen Glucagon increases blood glucose...
U glucagoni, un c. epinephrine; glucagon d. epinephrine; insulin e. glucagon; glycogen Glucagon increases blood glucose levels by stimulating what? O a. muscle cells to make glycogen Ob. muscle cells to break down muscle glycogen c. liver cells to break down liver glycogen d. both liver and muscle cells to break down their glycogen stores Ce. liver cells to make glycogen All statements regarding diabetes are true EXCEPT which one a. Usually when type 2 diabetics lose some excess body...
Biochemistry: Please do not copy and paste from other exercises. They are wrong and do not...
Biochemistry: Please do not copy and paste from other exercises.
They are wrong and do not have the same answer choices.
In muscle tissue, the ratio of phosphorylase a to phosphorylase b determines the rate of conversion of glycogen to glucose 1-phosphate. Classify how each event affects the rate of glycogen breakdown in isolated muscle tissue. Increased rate Decreased rate No change treatment with epinephrine removal of phosphate groups from phosphorylase a AMP allosteric binding activates phosphorylase b treatment with...
, ras-, Rat-, MEK-, MAPK. / 4. What determines the sensitivity of a cell to a...
, ras-, Rat-, MEK-, MAPK. / 4. What determines the sensitivity of a cell to a signaling ligand? a. The number of receptor proteins in the plasma membrane. b. The ligand concentration. c. The Kd of the receptor for a ligand. d. All of the above e. None of the above. 5. In the "fight or flight" response, epinephrine stimulation of muscle cells: a. inactivates Glycogen Phosphorylase Kinase (GPK). b. inactivates Glycogen Synthase (GS) c, activates Phosphoprotein Phosphatase 1 (PP1)....
4 Which of the following statements are true? Fructose-2,6-bisphosphate activates glycolysis Inorganic phosphate (that is, P)...
4 Which of the following statements are true? Fructose-2,6-bisphosphate activates glycolysis Inorganic phosphate (that is, P) is required for the function of glycogen phosphorylase Fructokinase is located primarily in liver cells A and C above only All of the above. E. 5. Chylomicrons ... A B. Are assembled from exogenous lipids. Contain tryacylglycerol in the center Are produced in the stomach A and B above A and C above 6. UDP-Glucose pyrophosphorylase.... B. Produces UDP-glucose Needs UTP and glucose-1-phosphate as...
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...
12. An enzyme, phosphodiesterase, catalyzes the conversion of CAMP to AMP. Using the glycogen control diagram handed out separately, predict whether activating phosphodiesterase in turn activates or deactivates each of the enzymes below: Deactivates Activates Enzyme phosphorylase kinase glycogen phosphorylase phosphoprotein phosphatase-1 glycogen synthase ロロロロ ロロロロ Thus, when phosphodiesterase is activated, glycogen degradation is glycogen synthesis is activated Odeactivated and O activated Odeactivated. Based on your answers above, which hormone most likely activates phosphodiesterase? Check all that apply. O insulin...
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...
U glucagoni, un c. epinephrine; glucagon d. epinephrine; insulin e. glucagon; glycogen Glucagon increases blood glucose levels by stimulating what? O a. muscle cells to make glycogen Ob. muscle cells to break down muscle glycogen c. liver cells to break down liver glycogen d. both liver and muscle cells to break down their glycogen stores Ce. liver cells to make glycogen All statements regarding diabetes are true EXCEPT which one a. Usually when type 2 diabetics lose some excess body...
Biochemistry: Please do not copy and paste from other exercises.
They are wrong and do not have the same answer choices.
In muscle tissue, the ratio of phosphorylase a to phosphorylase b determines the rate of conversion of glycogen to glucose 1-phosphate. Classify how each event affects the rate of glycogen breakdown in isolated muscle tissue. Increased rate Decreased rate No change treatment with epinephrine removal of phosphate groups from phosphorylase a AMP allosteric binding activates phosphorylase b treatment with...
, ras-, Rat-, MEK-, MAPK. / 4. What determines the sensitivity of a cell to a signaling ligand? a. The number of receptor proteins in the plasma membrane. b. The ligand concentration. c. The Kd of the receptor for a ligand. d. All of the above e. None of the above. 5. In the "fight or flight" response, epinephrine stimulation of muscle cells: a. inactivates Glycogen Phosphorylase Kinase (GPK). b. inactivates Glycogen Synthase (GS) c, activates Phosphoprotein Phosphatase 1 (PP1)....
4 Which of the following statements are true? Fructose-2,6-bisphosphate activates glycolysis Inorganic phosphate (that is, P) is required for the function of glycogen phosphorylase Fructokinase is located primarily in liver cells A and C above only All of the above. E. 5. Chylomicrons ... A B. Are assembled from exogenous lipids. Contain tryacylglycerol in the center Are produced in the stomach A and B above A and C above 6. UDP-Glucose pyrophosphorylase.... B. Produces UDP-glucose Needs UTP and glucose-1-phosphate as...
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...
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