Each of the following enzymes are similar in that they are all regulation points for thepathway/cycle they operate in ... except for one enzyme. Which of the following is not a regulatedenzyme?Pyruvate carboxylaseTransketolaseGlycogen phosphorylaseCitrate SynthasePhosphofructokinaseAcetyl CoA carboxylase888888

Enzymes are chemical substances that function in several biochemical reactions and help in the…

Answered: Each of the following enzymes are…

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 describe a role of lipoic acid in the pyruvate dehydrogenase complex of the citric acid cycle? (Select all that apply.) It accepts a hydroxyethyl group from pyruvate. O It reduces coenzyme A. O It transfers an acetyl group to coenzyme A. It is a reducing agent.
Pyruvate can be converted to glucose via gluconeogenesis, or it can be oxidized to acetyl-CoA for energy production. The enzyme pyruvate carboxylase is regulated allosterically by which of the following? Oxaloacetate All of the above Acetyl COA Glucose-6-phosphate Fructose-6-phosphate
In the first step of the TCA cycle the acetyl group of acetyl-CoA is transferred to oxaloacetate to produce citrate. Where will the carbonyl carbon of that acetyl group be after the first CO2 is expelled? Group of answer choices The first carbon of α-ketoglutarate The last carbon of α-ketoglutarate The fourth carbon of α-ketoglutarate The third carbon of α-ketoglutarate
Although glucose cannot be formed from acetyl-CoA, triglycerides can enter the glycolytic pathway via which process? O Acetyl-CoA → oxaloacetate → phosphoenolpyruvate O Palmitoyl-CoAB- ketoacyl-CoA → a-ketoglutarate O Glycerol → DHAP Acyl-CoA glucose
Under anaerobic conditions, following the radiolabel at carbon-2 of pyruvate, in which molecule does the carbon label ultimately end up so that it can be taken up by the muscle cell and used for metabolism? Lactate C-2 Glucose C-2 and C-5 Acetyl- CoA C-2 Glucose C-1 and C-6 CO2 Pyruvate C-2
What enzyme will not be used if the oxidative portion of the pentose phosphate pathway is operating to produce ribose 5-phosphate? Ribulose 5-phosphate isomerase 6-phosphoglucono-lactonase 6-phosphogluconate dehydrogenase Transaldolase
Arsenate can replace inorganic phosphate in the reaction catalyzed by glyceraldehyde-3-phosphate dehydrogenase, causing glyceraldehyde-3-phosphate to be directly converted to 3-phosphoglycerate(NADH is still formed). Which of the following is absolutely true in case of arsenate poisoning -Glycolysis will stop - Glycolysis will still proceed with no net ATP gain - Glycolysis will not generate any form of energy - Glycolysis will still proceed, but with a net consumption of ATP - Glycolysis will proceed with lactate as end product
When acetyl-CoA containing radioactively labeled carbon atoms is fed to cells, the CO, produced is not initially radioactive. However, molecules of citrate and oxaloacetate are radioactive. Only after some time has passed will radioactive CO2 be released. What is the best explanation for this observation?
Which of the following catalyzes a step that does NOT produce CO2? Group of answer choices alpha-ketoglutarate dehydrogenase complex malate dehydrogenase pyruvate dehydrogenase complex isocitrate dehydrogenase Citrate synthase is regulated by... Group of answer choices Concentrations of substrate and products Fructose-2,6-Bisphosphate Covalent modification Allosteric regulation by the levels of NADDH
alpha-ketoglutarate dehydrogenase will do which of the following: Select one: a. Pyruvate is decarboxylated to become acetyl-CoA producing NADH and Carbon dioxide b. Succinate is oxidized to become fumarate forming FADH2 c. Succinyl-CoA becomes Succinate and forms one ATP molecule and Coenzyme A-SH d. Oxaloacetate combines with the acetyl from acetyl-CoA to produce Citric acid(citrate) e. Malate is oxidized to become oxaloacetate forming NADH f. Isocitrate and then decarboxylated and oxidized to produce alpha-ketoglutarate, Carbon dioxide and NADH g. Citrate is rearranged to become Isocitrate h. Fumarate is combined with water to become Malate i. alpha-ketoglutarate is oxidized and decarboxylated to produce Succinyl-CoA, Carbon dioxide and NADH
Once formed, what are the three possible fates of pyruvate and under what conditions do they occur? Match the appropriate pairs. Clear All pyruvate forms lactate pyruvate forms ethanol pyruvate forms acetyl-CoA under anaerobic conditions in animals under aerobic conditions under anaerobic conditions in yeast and other microorganisms
Pyridoxal phosphate is an important coenzyme in transamination reactions. We have seen this coenzyme before, in glycogen metabolism. Which enzyme in glycogen metabolism requires pyridoxal phosphate and what role does the coenzyme play in this enzyme?

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