Which of the following molecules controls the metabolic flow through both glycolysis and gluconeogenesis?fructose-2,6-bisphosphateO pyruvateO 2,3-bisphosphoglycerateO Glucose-6-phosphateO lactic acidO citrateWhich of the following enzymes plays a role in controlling the the half-life of CGMP?O CGMP phosphodiesteraseO CGMP phosphataseO CGMP half-life controlling enzymeO CGMP kinaseO CGMP phosphorylase

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Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Similar questions

Which of the following glycolytic enzymes catalyzes the conversion of fructose-1,6-bisphosphate into the two product molecules dihydroxyacetone phosphate, and glyceraldehyde-3-phosphate? phosphoglycerate kinase pyruvate kinase malate dehydrogenase aldolase phosphofructokinase
In which of the following metabolic conversions is ATP “generated” during glycolysis? Phosphoenolpyruvate -> pyruvate 2-Phosphoglycerate —> Phosphoenolpyruvate Glucose-6-phosphate —> Fructose-6-phosphate Fructose-1,6-bisphosphate —> Dihydroxyacetone phosphate + Glyceraldehyde-3-phosphate Fructose-6-phosphate —> Fructose-1,6-bisphosphate
Glucose is converted to pyruvate in glycolysis, yielding a netsynthesis of 2 ATP. In certain cells pyruvate can be reconverted to glucose during gluconeogenesis. How many ATPsare required to convert pyruvate back to glucose?
Which of the following cellular concentrations would be likely to increase the rate of glycolysis? Low AMP levels High glucagon levels ✓Low fructose-2,6-bisphosphate levels High AMP levels High phosphoenolpyruvate levels Low ATP levels
Which of the following metabolic pathways is correctly matched with the key enzyme that regulates that pathway? O pentose pathway: glucokinase O gluconeogenesis: phosphofructokinase glycolysis: fructose 1,6-bisphosphatase O citric acid cycle: glucose 6 phosphate dehydrogenase O fatty acid synthesis: acetyl coenzyme A carboxylase
At normal to low blood glucose concentrations (1.e., roughly 110 mg/dl or less), the enzyme that is responsible for sequestering or trapping glucose within cells is which of the following enzymes? O hexokinase O glycogen synthase O glucose-6-phosphatase O glucokinase
Which enzyme activity of the glycogen debranching enzyme is operating during the release of glucose units linked to glycogen branchpoints via a1,6 glycosidic linkage? O phosphorylase activity O phosphatase activity O transferase activity O glucosidase activity
In which of the following metabolic conversions is ATP “generated” during glycolysis? Glucose —> Glucose-6-phosphate 1,3-Bisphosphoglycerate —> 3-Phosphoglycerate Fructose-1,6-bisphosphate —> Dihydroxyacetone phosphate + Glyceraldehyde-3-phosphate Glucose-6-phosphate —> Fructose-6-phosphate 2-Phosphoglycerate —> 3-Phosphoglycerate
Consider the following reaction sequence. glucose 1-phosphate + UTP UDP-glucose +-0-P-0- UDP-glucose + (glucose), UDP + (glucose),+1 Which of the following characterizes this process? consumes energy O all of these anabolic O a step in gluconeogenesis
What is the main enzyme that serves as the control point in the regulation of glycolysis? Hexokinase O Phosphoglyceromutase O Pyruvate kinase O Phosphofructokinase O Isomerase
The coenzyme NAD+ is required for which glycolytic reaction shown below? Oglyceraldehyde-3-P→ 1,3-bisphosphoglycerate glucose glucose-6-P fructose-6-P→ fructose-1,6-BP 2-phosphoglycerate → phosphoenolpyruvate
iodoacetate is an irreversible inhibitor of glyceraldehyde-3-phosphate dehydrogenase. which of the following is the expected outcome of the exposure of a cell to iodoacetate - Cellular resiration will stop if the cell solely depends on glucose as fuel - The rate of cellular respiration will increase - The reoxidation of coenzymes will noy be affected , but the efficiency of oxidative phosphorylation will be diminished - There will be no effect on cellular respiration as long as the cell has a large glucose reserve -The cell sill not be able to reoxidize the reduced coenzymes

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Which of the following molecules controls the metabolic flow through both glycolysis and gluconeogenesis? O fructose-2,6-bisphosphate O pyruvate O 2,3-bisphosphoglycerate O Glucose-6-phosphate O lactic acid O citrate