Why is glucose phosphorylated to become glucose-6-phosphate? Group of answer choices to isomerize it to glucose 1 phosphate to activate the enzyme hexokinase to trap glucose inside the cell and commit it to the pathway to form bisphosphate molecules

Why is glucose phosphorylated to become glucose-6-phosphate? Group of answer choices to isomerize it to glucose 1 phosphate to activate the enzyme hexokinase to trap glucose inside the cell and commit it to the pathway to form bisphosphate molecules

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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During glycogen synthesis, glucose-1P is converted into a molecule called UDPG. This reaction also cleaves uridine triphosphate (UTP) forming uridine monophosphate and pyrophosphate (PPi). Provide four reasons why UTP can be used to power this reaction (no diagrams necessary).
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Glucose-1-phosphate has a higher phosphoryl group transferpotential than does glucose-6-phosphate. Review the structures of these molecules and suggest a reason for thisphenomenon.
Assume the carbon atoms in a molecule of glucose are radioactive. Referencing specific compounds, trace where the radioactive carbon atoms in glucose end up through the catabolic process of cellular respiration. Make sure to tally the number of molecules and the number of carbon atoms in each of them to ensure all carbon atoms in glucose are accounted for.
Metabolic processes that generate FADH2 are: (Select all that apply). Krebs Cycle Glycolysis PDH Fatty Acid Synthesis Electron Transport Chain Gluconeogenesis Beta oxidation
Which of the following conditions will produce active glycogen phosphorylase? AMP АТР Phosphorylation of Serine 14 Glucose Glucose-6-Phosphate Phosphorylation of Serine 14 and AMP Phosphorylation of Serine 14 and ATP
The first step of glycolysis, conversion of glucose to glucose-6-phosphate (Choose all that apply) O is a phosphorylation reaction O results in the cleavage of a phosphoanhydride bond O prevents glucose from diffusing back out to the cell via a glucose GLUT transporter O results in a phosphoryl group transfer from fructose 1,6 bisphosphate O is an aldose isomerization reaction O results in the formation of a thioester bond
ymes change their conformation after each reaction, therefore they can only be used once. OEnzymes can be proteins that can be denatured by changes in pH or temperature. D Question 37 A major difference between purine and pyrimidine biosynthesis is that pyrimidine: O are attached to the ribose sugar while being synthesized O are completely synthesized prior to attaching to the ribose sugar O are partially synthesized, the sugar is added, then synthesis is completed O do not have a sugar moiety Question 38 Which of the following is produced in largest numbers by the TCA cycle?
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Loss of this enzyme would be lethal to the cell CH₂-CH-CH₂ OH OH Glycerol- phosphate Loss of this enzyme would severely reduce the exchange of lipids between the cytosol and lumen P CH₂-CH-CH₂ O O I =C C=O Loss of this enzyme would lead to membrane phospholipids with identical phosphate head groups Phosphatase Acyl transferase Loss of this enzyme would result in membranes deficient in phosphatidylcholine Choline head Cytosol group ER lumen Choline phosphotransferase Loss of these enzymes would prevent lipid transfer between the ER and mitochondria Flippase lipid exchange proteins
An enzyme that catalyzes a reaction such as the one below is alan: || C-0 || C-0 C=0 С —о — Н I| Н-С—Н H- C H H isomerase O kinase O dehydratase O dehydrogenase O phosphorylase O - I
Which steps are part of the energy investing half of glycolysis? OPhosphorylation Isomerization Second Phosphorylation Cleavage Conversion of DHAP into GADP O Dephosphorylation Phosphate transfer O Dehydration Second dehydration