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Concept explainers
(a)
Interpretation: To identify
Concept introduction: In the glycolysis
Gluconeogenesis is an eleven-step pathway in which glucose is produced from non-carbohydrate substances. Glycogenesis is the metabolic pathway that converts
(b)
Interpretation: To indicate glycogen is encountered in which of the four processes glycolysis, glycogenesis, glycogenolysis, and gluconeogenesis.
Concept introduction: In the glycolysis metabolic pathway, a glucose molecule breaks down into two pyruvate molecules. Two ATP molecules and NADH reduced coenzymes are produced in the glycolysis pathway.
Gluconeogenesis is an eleven-step pathway in which glucose is produced from non-carbohydrate substances. Glycogenesis is the metabolic pathway that converts
(c)
Interpretation: To indicate pyruvate is encountered in which of the four processes glycolysis, glycogenesis, glycogenolysis, and gluconeogenesis.
Concept introduction: In the glycolysis metabolic pathway, a glucose molecule breaks down into two pyruvate molecules. Two ATP molecules and NADH reduced coenzymes are produced in the glycolysis pathway.
Gluconeogenesis is an eleven-step pathway in which glucose is produced from non-carbohydrate substances. Glycogenesis is the metabolic pathway that converts
Pyruvate
(d)
Interpretation: To indicate
Concept introduction: In the glycolysis metabolic pathway, a glucose molecule breaks down into two pyruvate molecules. Two ATP molecules and NADH reduced coenzymes are produced in the glycolysis pathway.
Gluconeogenesis is an eleven-step pathway in which glucose is produced from non-carbohydrate substances. Glycogenesis is the metabolic pathway that converts
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Chapter 24 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Which of the following answer choices correctly describes the function of amylase? Select one: a. Cleaves polysaccharides into glucose, limit dextrins, and maltose b. Cleaves each molecule of glucose into two molecules of pyruvate c. Cleaves monosaccharides into glucose, limit dextrins, and maltose d. Cleaves polysaccharides into amino acids, limit dextrins, and monosaccharides at alpha-1-6 branch pointsarrow_forwardDetermine the number of carbon atoms present and the the total number of phosphate groups present in each of these following intermediates of glycolysis: a. Glyceraldehyde 3-phosphate b. 3-Phosphoglyceratearrow_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_forward
- Glucose-6-phosphate isomerase is used to do which of the following steps of glycolysis Select one: a. Glucose-6-phosphate is converted to Fructose-6-phosphate b. 3-phosphoglycerate is converted 2-phosphoglycerate c. Glyceraldehyde-3-phosphate is converted to 1,3 Bisphosphoglycerate d. Glucose is converted to Glucose-6-phosphate e. Dihydroxyacetone (Glycerone Phosphate) is converted to Glyceraldehyde-3-phosphate f. Fructose-1,6 Bisphosphate is converted to Dihydroxyacetone and Glyceraldehyde-3-phosphate g. 1,3 Bisphosphoglycerate is converted to 3-phosphoglycerate h. Phosphoenolpyruvate is converted to pyruvate i. Fructose-6-phosphate is converted to Fructose-1,6,bisphosphate j. 2-phosphoglycerate is converted to Phosphoenolpyruvatearrow_forwardDuring gluconeogenesis, the three irreversible steps of glycolysis have to be bypassed. The first step is the conversion of pyruvate to phosphoenolpyruvate. Which of the following statement is false regarding the reaction step? Select one: a. Conversion of oxaloacetate from pyruvate occurs in mitochondria and shuttled into the cytosol. b. Formation of phosphoenolpyruvate requires both ATP and GTP as an energy source. c. Acetyl CoA is an activator of enzyme pyruvate carboxylase. d. This reaction involves two-step process catalyzed by pyruvate carboxylase and phosphoenolpyruvate carboxykinasearrow_forwardWhich of the following is the fourth step of glycolysis? Select one: a. Phosphoenolpyruvate is converted to pyruvate b. 1,3 Bisphosphoglycerate is converted to 3-phosphoglycerate c. Fructose-1,6 Bisphosphate is converted to Dihydroxyacetone and Glyceraldehyde-3-phosphate d. Glucose-6-phosphate is converted to Fructose-6-phosphate e. 2-phosphoglycerate is converted to Phosphoenolpyruvate f. Dihydroxyacetone (Glycerone Phosphate) is converted to Glyceraldehyde-3-phosphate g. 3-phosphoglycerate is converted 2-phosphoglycerate h. Glucose is converted to Glucose-6-phosphate i. Glyceraldehyde-3-phosphate is converted to 1,3 Bisphosphoglycerate j. Fructose-6-phosphate is converted to Fructose-1,6,bisphosphatearrow_forward
- Specify the number of carbon atoms present and the number of phosphate groups present in each of the following glycolysis intermediates (3 points each) 1. Glucose 6 phosphate 2. Fructose 1, 6, phosphate 3. Glyceraldehyde 3-phosphate 4. 3-phospholglycerate 5. Fructose 6 phosphatearrow_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 Glycolytic pathway describes the oxidation of glucose to pyruvate with the generation of ATP and NADH Which of the following 8 statements are correct about the process of Glycolysis? a.Dihydroxyacetone phosphate is isomerized to the aldehyde glyceraldehyde 3-phosphate b. phosphoenolpyruvate is formed from the loss of a hydrogen atom on carbon 2 and a hydroxyl group from carbon 3 c. Glucose transporters only transports phosphorylated glucose d. 2 molecules of NADH is produced from the phosphorylated oxidation of Glyceraldehyde-3-phosphate e. when phosphoenolpyruvate is converted to pyruvate, 1 molecule of ATP is produced f. Fructose-1,6.biphosphate is cleaved by aldolase to form 2 molecules of glyceraldehyde-3-phosphate g. The substrate level phosphorylation of 1,3-biphosphoglycerate yields 2 molecules of ATP h. Glyceraldehyde-3-phosphate loses a hydrogen atom on carbon 1 and gains an oxygen atom i. The ketose sugar glucose-6-phosphate is…arrow_forwardDetermine the number of carbon atoms present and the the total number of phosphate groups present in each of these following intermediates of glycolysis: a. Glucose 6-phosphate b. Fructose 1,6-phosphatearrow_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
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