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. |
Homework Answers
the right option is (b)
Glycogen phosphorylase kinase activates glycogen phosphorylase through phosphorylation.
Add Answer to:
1. Which of the following is true regarding glycogen
metabolism?
a.
Glycogen synthase is activated by...
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...
Hi the automatic grader for my biochemistry assignment is saying im getting things wrong but i...
Hi the automatic grader for my biochemistry assignment is saying
im getting things wrong but i cannot figure out which. Please tell
me which are wrong with corrected answers. Thanks!
Which of the following is true regarding glycogen metabolism? O Glycogen synthase is activated by phosporylation. Glycogen phosphorylase kinase activates glycogen phosphorylase through phosphorylation. The activation of PKA is downstream of insulin signaling in muscle cells. O Glycogen phosphorylase releases free glucose from the ends of glycogen Question 7 (2.5...
€ → 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 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
, 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)....
D Question 30 Soveral hours after a meal, the brain uses During starvation, the brain uses...
D Question 30 Soveral hours after a meal, the brain uses During starvation, the brain uses as fuel. glucose from glycogen stored in the brain ketone bodies produced in the heart glucose from olycogen stored in the liver kolone bodies produced in the liver glucose from glycogen stored in the muscles kotone bodo produced in the liver fatty acids from adipose tissue glucose from gluconeogenesis in the liver D Question 31 Question 2 pts Which of the following enzyme pairs...
Acetylcholine binds to a GPCR on heart muscle, making the heart beat more slowly. The activated r...
Acetylcholine binds to a GPCR on heart muscle, making the heart beat more slowly. The activated receptor stimulates a G protein, which opens a K channel in the plasma membrane, as shown in the figure below. Which of the following would enhance this effect of the acetylcholine? plasma membrane closed K' channel GTP Pr complex activated α subunit K CHANNEL open K'channel OPENING EXTRACELLULAR SPACE CYTOSOL GTP G-PROTEIN INACTIVATION K" CHANNEL CLOSING closed K' channel rt inactive G protein GOP...
16. Briefly describe the action of Insulin on carbohydrate metabolism, fat metabolism, and on protein metabolism. I...
16. Briefly describe the action of Insulin on carbohydrate metabolism, fat metabolism, and on protein metabolism. I.e. do es it promote (+) or discourage (-) the following? a. Glycogenesis (production of glycogen) b. Glycogenolysis (breakdown of glycogen) c. Glycolysis: using glucose for fuel inside cells d. Gluconeogenesis: Production of glucose by liver (usually from aa) e. Uptake of glucose into fat and muscle cells? f. Lipid synthesis: Production of Triglycerides in fat cells g. Lipid breakdown/mobilization of fat from adipocytes(breakdown...
which of the following statements is/are true?? can make more than ONE answer a The oxidation...
which of the following statements is/are true?? can make more
than ONE answer
a The oxidation of glyceraldehyde-3-phosphate requires NAD+ as an electron acceptor. b Under aerobic conditions NADH passes electrons to 02. c Under anaerobic conditions NADH reduces pyruvate to lactate and is thereby recycled to NAD+. You are given three tubes containing three unidentified bacteria. One bacterium lives by fermentation. d One bacterium lives by aerobic oxidation of glucose via the citric acid cycle. One bacterium lives by...
7. Which statement is TRUE of glycogen synthesis and breakdown?---->the answer is A but I need...
7. Which statement is TRUE of glycogen synthesis and breakdown?---->the answer is A but I need it explained to me. a. Phosphorylation activates the enzyme responsible for breakdown, and inactivates the synthetic enzyme. b. Synthesis is catalyzed by the same enzyme that catalyzes breakdown. c. The glycogen molecule "grows" at its reducing end. d. The immediate product of glycogen breakdown is free glucose. e. Under normal circumstances, glycogen synthesis and glycogen breakdown occur simultaneously and at high rates.
Hi the automatic grader for my biochemistry assignment is saying
im getting things wrong but i cannot figure out which. Please tell
me which are wrong with corrected answers. Thanks!
Which of the following is true regarding glycogen metabolism? O Glycogen synthase is activated by phosporylation. Glycogen phosphorylase kinase activates glycogen phosphorylase through phosphorylation. The activation of PKA is downstream of insulin signaling in muscle cells. O Glycogen phosphorylase releases free glucose from the ends of glycogen Question 7 (2.5...
€ → 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...
, 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)....
D Question 30 Soveral hours after a meal, the brain uses During starvation, the brain uses as fuel. glucose from glycogen stored in the brain ketone bodies produced in the heart glucose from olycogen stored in the liver kolone bodies produced in the liver glucose from glycogen stored in the muscles kotone bodo produced in the liver fatty acids from adipose tissue glucose from gluconeogenesis in the liver D Question 31 Question 2 pts Which of the following enzyme pairs...
Acetylcholine binds to a GPCR on heart muscle, making the heart beat more slowly. The activated receptor stimulates a G protein, which opens a K channel in the plasma membrane, as shown in the figure below. Which of the following would enhance this effect of the acetylcholine? plasma membrane closed K' channel GTP Pr complex activated α subunit K CHANNEL open K'channel OPENING EXTRACELLULAR SPACE CYTOSOL GTP G-PROTEIN INACTIVATION K" CHANNEL CLOSING closed K' channel rt inactive G protein GOP...
16. Briefly describe the action of Insulin on carbohydrate metabolism, fat metabolism, and on protein metabolism. I.e. do es it promote (+) or discourage (-) the following? a. Glycogenesis (production of glycogen) b. Glycogenolysis (breakdown of glycogen) c. Glycolysis: using glucose for fuel inside cells d. Gluconeogenesis: Production of glucose by liver (usually from aa) e. Uptake of glucose into fat and muscle cells? f. Lipid synthesis: Production of Triglycerides in fat cells g. Lipid breakdown/mobilization of fat from adipocytes(breakdown...
which of the following statements is/are true?? can make more
than ONE answer
a The oxidation of glyceraldehyde-3-phosphate requires NAD+ as an electron acceptor. b Under aerobic conditions NADH passes electrons to 02. c Under anaerobic conditions NADH reduces pyruvate to lactate and is thereby recycled to NAD+. You are given three tubes containing three unidentified bacteria. One bacterium lives by fermentation. d One bacterium lives by aerobic oxidation of glucose via the citric acid cycle. One bacterium lives by...
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