Which of the following is incorrect about the conversion of acetyl-CoA (2 C) to malonyl-COA (3 C)?Oa. It is irreversibleO b.O c.It is a decarboxylationIt is regulatedOd. It is the first step of fatty acid synthesis+

Acetyl CoA (2C) conversion to Malonyl CoA (3C) is the first step of fatty acid synthesis.

Answered: Which of the following is incorrect…

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 the chemical end product of fatty-acids metabolized in the beta-oxidation pathway? Select one: a. Beta-carotine b. Free-radicals c. Lactic acid d. Acetyl-CoA e. Pyruvate
Which of the following is NOT produced during the reactions of acetyl-CoA formation? (only one choice is correct) A. Acetyl CoA B. Electrons C. CO2 D. ATP
Which of the following is NOT a fate of acetyl-CoA in mammals?a. Is used to synthesize cholesterolb. Is used to synthesize ketone bodiesc. Is used to synthesize fatty acidsd. Is used to synthesize malonyl-CoA that is in turn converted into alaninee. Is oxidized by citrate acid cyclef. All of above are fates of acetyl-CoA
The rate-limiting step in fatty acid synthesis is: a. The reduction of the acetoacetyl group to a ?-hydroxybutyryl group b. Formation of malonyl-CoA from malonate and coenzyme A. c. Condensation of acetyl-CoA and malonyl-CoA. d. The reaction catalyzed by acetyl-CoA carboxylase.
Acetyl-CoA carboxylase is inhibited by A. biotin B. citrate C. acetyl-CoA D. palmitate
When fatty acids are not completely metabolized, they are often converted into: Glucose Oxaloacetate O Amino Acid O Acetyl CoA molecules O None of these answers are correct.
Which of the following statements is/are TRUE about fatty acid activation before β-oxidation? I. The process consumes energy equivalent to two moles of ATP. II. The fatty acid is activated by ATP to give a fatty acyl-CoA.
Which of the following statements about the "central role" of TCA is/are correct? a. Some metabolic intermediates of TCA are used as non-carbohydrate sources for gluconeogenesis. b. β-oxidation of lipids produces acetyl-CoA that can enter TCA. c. All metabolic intermediates in TCA are used in the biosynthesis of amino acids. d. Degraded amino acids are converted to metabolic intermediates of TCA, then to ketone bodies.
Degradation of fats as an energy source involves all of the following excepta) β -oxidation.b) acetyl-CoA.c) glycerol.d) lipase.e) transamination.
Before a fatty acid can undergo β-oxidation, it must be activated and then shuttled across the inner mitochondrial membrane. The activating agent and shuttle molecule are, respectively: A. CoA and carnitine B. CoA and citrate C. acetyl CoA and carnitine D. acetyl CoA and citrate
Lysine is degraded to acetoacetyl-CoA then to acetyl-CoA, and is described as a _______ amino acid. a.polar b.glucogenic c.keto-gluco d.ketogenic

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Which of the following is incorrect about the conversion of acetyl-CoA (2 C) to malonyl- COA (3 C)? O a. It is irreversible O b. It is a decarboxylation O c. It is regulated Od. It is the first step of fatty acid synthesis