Concept explainers
(a)
Interpretation:
Whether the enzyme Glucose 6-phosphatase is involved in glycolysis or gluconeogenesis or in both has to be determined.
Concept Introduction:
Glycolysis:
It is the
Gluconeogenesis:
Gluconeogenesis is the metabolic pathway by which glucose is synthesized from non-carbohydrate materials.
(b)
Interpretation:
Whether the enzyme Fructose 1,6-biphosphatase is involved in glycolysis or gluconeogenesis or in both has to be determined.
Concept Introduction:
Glycolysis:
It is the metabolic pathway by which glucose (a
Gluconeogenesis:
Gluconeogenesis is the metabolic pathway by which glucose is synthesized from non-carbohydrate materials.
(c)
Interpretation:
Whether the enzyme Pyruvate kinase is involved in glycolysis or gluconeogenesis or in both has to be determined.
Concept Introduction:
Glycolysis:
It is the metabolic pathway by which glucose (a
Gluconeogenesis:
Gluconeogenesis is the metabolic pathway by which glucose is synthesized from non-carbohydrate materials.
(d)
Interpretation:
Whether the enzyme Phosphoglucoisomerase is involved in glycolysis or gluconeogenesis or in both has to be determined.
Concept Introduction:
Glycolysis:
It is the metabolic pathway by which glucose (a
Gluconeogenesis:
Gluconeogenesis is the metabolic pathway by which glucose is synthesized from non-carbohydrate materials.
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EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- 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_forwardFor each of the following conditions, state whether this condition would be occurring during gluconeogenesis, glycolysis, or both in liver cells. a. Transporting malate from the cytosol into the mitochondria. _____________ b. Transporting pyruvate from the cytosol into the mitochondria. _____________ c. We would have an increased (or increasing) concentration of F26BP. __________ d. Increased concentration of F6P.__________ e. Hexokinase IV (or glucokinase) is found in the nucleus of the cell. __________ f. The enzyme that synthesizes/breaks down F26BP is phosphorylated. __________ g. Elevated levels of glucagon in the blood. ____________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
- Hexokinase 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 NOT a component of the pyruvate dehydrogenase complex? a. dihydrolipoyl dehydrogenase b. dihydrolipoyl transacetylase c. pyruvate dehydrogenase d. dihydrolipoyl catalasearrow_forwardWhich of the following enzymes is the key regulatory step in glycolysis? Phosphofructiokinase-1 is the answer. Explain? A. Phosphoglucose Isomerase B. Phosphofructokinase-1 C. Pyruvate Kinase D. Hexokiase E. Phosphofructokinase-2 ...Why is Phosphoglucose Isomerase wrong?arrow_forward
- Indicate what will happen ( increase, decrease or no effect) tothe activity of the enzyme or rate of the metabolic pathway in the given conditions a. release of glucagon in the blood to the activity of carnitine acyl transferase 1 b. high malonyl CoA to the activity of carnitine acyl transferase I C. Epinephrine to the activity og glycogen synthase d. high citrate to the activity of acetyl CoA carboxylase e. high acetyl CoA to ketogenesisarrow_forwardGlyceraldehyde 3-phosphate dehydrogenase is used to do which of the following steps of glycolysis Select one: a. 1,3 Bisphosphoglycerate is converted to 3-phosphoglycerate b. Phosphoenolpyruvate is converted to pyruvate c. 2-phosphoglycerate is converted to Phosphoenolpyruvate d. Glyceraldehyde-3-phosphate is converted to 1,3 Bisphosphoglycerate e. Fructose-6-phosphate is converted to Fructose-1,6,bisphosphate f. Dihydroxyacetone (Glycerone Phosphate) is converted to Glyceraldehyde-3-phosphate g. Fructose-1,6 Bisphosphate is converted to Dihydroxyacetone and Glyceraldehyde-3-phosphate h. Glucose-6-phosphate is converted to Fructose-6-phosphate i. 3-phosphoglycerate is converted 2-phosphoglycerate j. Glucose is converted to Glucose-6-phosphatearrow_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
- Identify the conversion which is not involved in glycolysis. a.Glucose to glucose 6-phosphate by hexokinase b.Triose phosphate to 2-phosphoglycerate by phosphoglyceromutase c.PEP to pyruvic acid by pyruvate kinase d.Sucrose to glucose and fructose by invertasearrow_forwardThe rate limiting and committed step of the pentose phosphate pathway is catalyzed by which of the following enzymes? A. Glucose-6-phosphate dehydrogenase B. Hexokinase C. 6-Phosphogluconate dehydrogenase D. Transketolasearrow_forwardCHOOSE THE CORRECT LETTER When glycogen is synthesized in both the liver and muscle, all the following are true, EXCEPT A.Glucose is transferred from UDP-glucose to a growing glycogen molecule by glycogen synthase.B. Phosphoglucomutase converts glucose 6-phosphate to glucose 1-phosphateC. Glucose 6-phosphate is converted to glucose by a phosphatase.D.Glucose 1-phosphate is activated by UDP-glucose pyrophosphorylase to produce UDP-glucose and PPi.arrow_forward
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