All of the following are accurate contrasts for beta oxidation vs fatty acid synthesis except which of the following statements? Group of answer choices The hydroxylacyl group differs in stereochemistry between beta oxidation and biosynthesis CoA is the acyl carrier group in beta oxidation, acyl carrier protein is the carrier in biosynthesis The carbon unit resulting from beta oxidation is acetyl-CoA, the carbon unit for biosynthesis is malonyl-CoA FAD is an electron acceptor in beta oxidation, NADP+ is the electron acceptor in biosynthesis

All of the following are accurate contrasts for beta oxidation vs fatty acid synthesis except which of the following statements? Group of answer choices The hydroxylacyl group differs in stereochemistry between beta oxidation and biosynthesis CoA is the acyl carrier group in beta oxidation, acyl carrier protein is the carrier in biosynthesis The carbon unit resulting from beta oxidation is acetyl-CoA, the carbon unit for biosynthesis is malonyl-CoA FAD is an electron acceptor in beta oxidation, NADP+ is the electron acceptor in biosynthesis

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter27: Metabolic Integration And Organ Specialization

Section: Chapter Questions

Problem 17P

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Complete oxidation of a 16-carbon fatty acid can yield 129 molecules of ATP Study Figure 19.2 and determine how many ATP molecules would be generated if a 16-carbon fatly acid were metabolized solely by the TCA cycle, in the form of S acetyl-CoA molecules.
Using the ActiveModel for enoyl-CoA dehydratase, give an example of a case in which conserved residues in slightly different positions can change the catalytic rate of reaction.
Most fatty acids have an even number of carbons and, therefore, are completely metabolized to acetyl-CoA. A fatty acid with an odd number of carbonsis metabolized to acetyl-CoA and one equivalent of propionyl-CoA. The following two reactions convert propionyl-CoA into succinyl-CoA, a citric acidcycle intermediate, so it can be further metabolized. Each of the reactions requires a coenzyme. Identify the coenzyme for each step. From what vitaminsare the coenzymes derived? (Hint: see Chapter 23.) COO− COO−CH2CH2methylmalonyl-CoA succinyl-CoA CH3CH2 SCoA
Which of the following statements is TRUE about fatty acid biosynthesis? Group of answer choices: NADH is used as the reducing equivalent in the process. Malonyl ACP is the donor of the acetyl group. The product detaches from the fatty acid synthase complex when the chain length is usually 18 carbons. Oxaloacetate carries acetyl CoA to the cytosol.
Fatty acid synthesis is largely the reverse of beta oxidation, yet there are some distinct differences. From the statements below, which of the following is inaccurateconcerning fatty acid metabolism? Both processes use mobile electron carriers Both beta oxidation and fatty acid synthase use a carrier group The first step in fatty acid degradation pathway and biosynthetic pathway are regulated C2 unit of acetyl moiety is used in both fatty acid degradation and fatty acid biosynthesis Both processes occur in a unique, specific location (Compartmentalization)
Which of the following biochemical conversions can be carried out by the least number of proteins? Assume proper metabolic conditions, abundance of cofactors, necessary accessory molecules, etc. 1 propionyl-CoA → 1 succinyl-CoA 1 palmitate (16:0) → 8 acetyl-CoA 1 acetyl-CoA + 7 malonyl-CoA → 1 palmitate (16:0) 1 palmitate (16:0) → 1 acetyl-CoA + 1 myristic acid (14:0) 1 acetyl-CoA → 1 succinate Please answer very soon will give rating surely
On these following choices, Malonyl CoA synthase, Malonyl CoA synthetase, Acetyl CoA carboxylase and Acetyl CoA decarboxylase, what is the correct answer in fatty acid synthesis?
Which of the following is most helpful in ensuring that wasteful (unproductive) hydrolysis of acetyl CoA does not occur in the reaction catalyzed by citrate synthase? Group of answer choices Citrate synthase is a tetramer Induced fit ensures oxaloacetate binds before acetyl CoA 3 molecules of oxaloacetate bind for every 1 molecule of acetyl CoA Citrate inhibits the reaction 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
What is(are) the only active site(s) not used in the second round of fatty acid synthase? Select all that apply. Group of answer choices Acetyl-CoA ACP Transacylase Beta-Ketoacyl- ACP Synthase Beta-Ketoacyl- ACP Dehydrase Palmitoyl thioesterase Malonyl-CoA ACP Transacylase Enoyl-ACP Reductase
Anabolic reactions like fatty acid synthesis are inherently endergonic and require exergonic driving forces to proceed forward. Which of the following statements correctly describes the thermodynamics at play in the substrate activation step of fatty acid synthesis and the importance of this step in downstream elongation of the fatty acid chain? (A) Acetyl CoA carboxylase (ACC1) provides free energy that powers the carboxylation of acetyl CoA to form malonyl CoA.(B) The formation of malonyl CoA is powered by the exergonic carboxylation of acetyl CoA.(C) The formation of a b-ketoacyl ACP in the first step of fatty acid synthesis is driven forward because b-ketoacyl synthase hydrolyzes ATP. (D) The addition of two carbons to the growing fatty acid chain is powered by malonyl ACP decarboxylation.(E) Decarboxylation of malonyl ACP is exergonic and the free energy that is released is coupled to ATP synthesis.
What is the final reaction in the final round of fatty acid synthase? Acetyl-CoA ACP Transacylase Beta-Ketoacyl- ACP Synthase Beta-Ketoacyl- ACP Dehydrase Palmitoyl thioesterase Malonyl-CoA ACP Transacylase Enoyl-ACP Reductase
What is the rate-limiting step in the synthesis of acetyl CoA? oxidation regeneration of lipoamide decarboxylation transfer to lipoamide transfer to CoA