Carbon dioxide loss, or decarboxylation, occurs in the Krebs Cycle with the transition ofa.citrate to isocitrate.b.isocitrate to a-ketoglutarate.succinate to fumarate.d.C.fumarate to malate.malate to oxaloacetate.e.abi

When there is energy demands in the cells, the acetyl CoA molecules produced through the oxidative…

Answered: Carbon dioxide loss, or…

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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A patient who has been drinking large amounts of alcohol for long periods of time shows thefollowing symptoms: apathy, loss of memory, and a rhythmical to-and-fro motion of the eyeballs.Which of the following reactions are most likely to be affected in the patient? A. Conversation of pyruvate to acetyl-CoA B. Conversation of a-ketoglutarate to succinyl-CoA C. Both A and B D. Neither A nor B
Which of the following is incorrect about the pyruvate dehydrogenase reaction? a. It links glycolysis and the citric acid cycle O b. It is irreversible O c. It is regulated Od. It is a reductive carboxylation
Which of the following is incorrect about the conversion of pyruvate (with 3 C) and CO₂ to oxaloacetate (with 4 C) catalyzed by pyruvate carboxylase? O a. Pyruvate is being carboxylated O b. Pyruvate carboxylase is not a regulatory enzyme Oc. Pyruvate carboxylase uses biotin (a vitamin) as a cofactor Od. The reaction is.irreversible
Six-carbon Glucose is completely oxidized to CO2 and H2O during respiratory metabolism. When do these "decarboxylation" reactions occur? A. First five steps of glycolysis B. Last five steps of glycolysis C. Pyruvate Oxidation D. Citric Acid/Krebs Cycle E. Both C and D above
The concentration of this compound depends on pyruvate produced from glycolysis. OA. glucose B. oxaloacetate O c. carbon dioxide O D. pyruvate 15
Mitchondrial matrix contains enzymes of: a. Pyruvate dehydrogenase b. TCA cycle enzyme c. Acyl CoA synthetase d. ATP synthase e. B-oxidation enzymes
What is the main function of anti-oxidant compounds? Select one: a. They donate hydrogen ions to free radicals b. They aid in metabolism by stripping electrons from carbohydrates and fatty acids c. They help reduce concentration of HDL in the blood d. They interfere with function of lipoprotein lipase
CHOOSE THE CORRECT LETTERHow many cycles of B-oxidation are necessary to completely oxidize 3 molecules stearic acid (C18H3602)?A. 24B. 18C. 27D. 21
In the reaction 7-dehydrocholesterol + NADH + H+ cholesterol oxidation of 7-dehydrocholesterol with the concomitant reduction A. True B. False + NADP+, cholesterol is the product of the of NADH + H+ to NADP*.
Conversion of pyruvate to PEP requires the action of a. Fructose-1,6-bisphosphatase b. Two cytosolic enzymes. c. A mitochondrial enzyme and a cytosolic enzyme d. Hexokinase/glucokinase e. Two mitochondrial enzymes
As you know, the enzymes regulating glycogen metabolism are under strict control. Which compound(s) below is/are likely to serve as a major (direct or indirect) regulator of enzymes involved in glycogen metabolism (pick the BEST answer)? A. AMP B. Glucose 6-phosphate C. Insulin D. Glucagon E. all of the choices presented in this question are correct
During which of the following conversions is NADH+H+ formed in the glycolysis cycle? a. Glyceraldehyde 3-phosphate to 1,3-bisphosphoglycerate b. 1,3-bisphosphoglycerate to 3-Phosphoglycerate c. 2-Phosphoglycerate to Phosphoenolpyruvate d. Phosphoenolpyruvate to Pyruvate

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Carbon dioxide loss, or decarboxylation, occurs in the Krebs Cycle with the transition of citrate to isocitrate. a. b. isocitrate to a-ketoglutarate. succinate to fumarate. d. C. fumarate to malate. e. malate to oxaloacetate. d. Ob