Concept explainers
(a)
Interpretation: To indicate whether
Concept introduction: Glucose is a monosaccharide with the molecular formula
Glycogenesis is the
(b)
Interpretation: To indicate whether UDP is involved in (1) glycogenesis but not in glycogenolysis, (2) glycogenolysis but not glycogenesis, (3) both glycogenesis and glycogenolysis or (4) neither glycogenesis nor glycogenolysis.
Concept introduction: Glucose is a monosaccharide with the molecular formula
Glycogenesis is the metabolic pathway that converts
(c)
Interpretation: To indicate whether glycogen is involved in (1) glycogenesis but not in glycogenolysis, (2) glycogenolysis but not glycogenesis, (3) both glycogenesis and glycogenolysis or (4) neither glycogenesis nor glycogenolysis.
Concept introduction: Glucose is a monosaccharide with the molecular formula
Glycogenesis is the metabolic pathway that converts
(d)
Interpretation: To indicate whether
Concept introduction: Glucose is a monosaccharide with the molecular formula
Glycogenesis is the metabolic pathway that converts
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EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- All of the following statements concerning glycogenesis and glycogenolysis are true EXCEPT A. Taking this test will activate glycogen phosphorylase and inhibit glycogen synthase B. Being chased by a bear will activate glycogen synthesis and inhibit glycogen phosphorylase C. Exercise or “fight-or-flight” circumstances will result in an increase in epinephrine causing increased glycogen phosphorylase and decreased glycogen synthase activities D. High blood glucose and high insulin levels will activate glycogen synthesis and inhibit glycogen phosphorylase E. Glucagon will activate glycogen phosphorylase and inhibit glycogen synthasearrow_forwardWhich of the following enzymes is found in gluconeogenesis but not in glycolysis? a. phosphohexose isomerase b. hexokinase c. fructose 1,6-bisphosphatase d. phosphoglycerate kinasearrow_forwarda) Describe the structure of a glycogen molecule. (you can explain without drawing) b) List the three enzymes involved in glycogen degradation and describe the type of reactions they catalyze c) Fill in the numbered blanks in the figure which is the list the source and fates of glucose-6- phosphate. Glycogen pentose phosphate pathway Glucose-6-phosphate Ribose-G-phosphate Glucose glycolysis 3 Amino acida |Lactate Citric acid cyclearrow_forward
- The first step in glycogenolysis (or the catabolism of glycogen) is the formation of: O A) fructose-1-phosphate. ○ B) fructose-6-phosphate. O C) glucose-1-phosphate. ◇ D) glucose-6-phosphate.arrow_forwardHexokinase is used to do which of the following steps of glycolysis? Select one: a. Glucose is converted to Glucose-6-phosphate b. Phosphoenolpyruvate is converted to pyruvate c. Dihydroxyacetone (Glycerone Phosphate) is converted to Glyceraldehyde-3-phosphate d. Fructose-6-phosphate is converted to Fructose-1,6,bisphosphate e. 3-phosphoglycerate is converted 2-phosphoglycerate f. 1,3 Bisphosphoglycerate is converted to 3-phosphoglycerate g. 2-phosphoglycerate is converted to Phosphoenolpyruvate h. Glyceraldehyde-3-phosphate is converted to 1,3 Bisphosphoglycerate i. Fructose-1,6 Bisphosphate is converted to Dihydroxyacetone and Glyceraldehyde-3-phosphate j. Glucose-6-phosphate is converted to Fructose-6-phosphatearrow_forwardWhich of the following is the third step of glycolysis? Select one: a. Glucose is converted to Glucose-6-phosphate b. Glyceraldehyde-3-phosphate is converted to 1,3 Bisphosphoglycerate c. Dihydroxyacetone (Glycerone Phosphate) is converted to Glyceraldehyde-3-phosphate d. 1,3 Bisphosphoglycerate is converted to 3-phosphoglycerate e. 3-phosphoglycerate is converted 2-phosphoglycerate f. Fructose-1,6 Bisphosphate is converted to Dihydroxyacetone and Glyceraldehyde-3-phosphate g. Glucose-6-phosphate is converted to Fructose-6-phosphate h. 2-phosphoglycerate is converted to Phosphoenolpyruvate i. Phosphoenolpyruvate is converted to pyruvate j. Fructose-6-phosphate is converted to Fructose-1,6,bisphosphatearrow_forward
- The immediate product of glycogen phosphorylase is: a. Glucose 6-phosphate. b. Glucose 1-phosphate. c. Fructose 1-phosphate. d. Glucose 1,6-bisphosphatearrow_forwardChoose the correct answer: 1- Regarding to glycogen metabolism, which of the following statements about is correct : A) A key step in the synthesis of glycogen is the formation of UDP-glucose.B) Glycogen is stored mainly in the liver and brain.C) Glucagon increases the synthesis of glycogen.D) In muscle in the fasting state, glycogen is broken down to glucose 6-phosphate, thenfree glucose.E) Insulin inhibits the synthesis of glycogen. 2- Glycogenesis is initiated by: A) UDP-glucose.B) glycogenin.C) glucose-6-phosphate.D) glucose.arrow_forwardWhich of the following is the ninth step of glycolysis? Select one: a. Fructose-1,6 Bisphosphate is converted to Dihydroxyacetone and Glyceraldehyde-3-phosphate b. 1,3 Bisphosphoglycerate is converted to 3-phosphoglycerate c. Phosphoenolpyruvate is converted to pyruvate d. Dihydroxyacetone (Glycerone Phosphate) is converted to Glyceraldehyde-3-phosphate e. Fructose-6-phosphate is converted to Fructose-1,6,bisphosphate f. 3-phosphoglycerate is converted 2-phosphoglycerate g. Glyceraldehyde-3-phosphate is converted to 1,3 Bisphosphoglycerate h. Glucose-6-phosphate is converted to Fructose-6-phosphate i. 2-phosphoglycerate is converted to Phosphoenolpyruvate j. Glucose is converted to Glucose-6-phosphatearrow_forward
- Which of the following is the first step of glycolysis? Select one: a. Glyceraldehyde-3-phosphate is converted to 1,3 Bisphosphoglycerate b. Dihydroxyacetone (Glycerone Phosphate) is converted to Glyceraldehyde-3-phosphate c. 1,3 Bisphosphoglycerate is converted to 3-phosphoglycerate d. Fructose-6-phosphate is converted to Fructose-1,6,bisphosphate e. 3-phosphoglycerate is converted 2-phosphoglycerate f. 2-phosphoglycerate is converted to Phosphoenolpyruvate g. Phosphoenolpyruvate is converted to pyruvate h. Glucose-6-phosphate is converted to Fructose-6-phosphate i. Fructose-1,6 Bisphosphate is converted to Dihydroxyacetone and Glyceraldehyde-3-phosphate j. Glucose is converted to Glucose-6-phosphatearrow_forwardDefine the following terms: a. ketogenic amino acid b. glucogenic amino acid c. L-amino acid oxidase d. Krebs urea cycle e. CPSIarrow_forward61. Degradation of glycogen in muscle fails to supply significant amounts of blood glucose because muscle lacks which of the following enzymes? A) Glucose-6-phosphatase B) Glucose-6-phosphate dehydrogenase C) Glycogen phosphorylase D) Phosphoglucomutase E) Phosphorylase kinasearrow_forward
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