For each of the steps below, choose (A) if the step pertains to b-oxidation, (B) if the step pertains to fatty acid synthesis, or (C) if the step is common to both processes. ______ Acetyl CoA is produced as a product. ______ Activation (the committed step of the process) requires ATP hydrolysis. ______ Accumulated acetyl CoA serves as a substrate. ______ The length of fatty acid carbon chain is modified in the mitochondria. ______ ACP acts as the acyl carrier.

For each of the steps below, choose (A) if the step pertains to b-oxidation, (B) if the step pertains to fatty acid synthesis, or (C) if the step is common to both processes. Acetyl CoA is produced as a product. Activation (the committed step of the process) requires ATP hydrolysis. Accumulated acetyl CoA serves as a substrate. The length of fatty acid carbon chain is modified in the mitochondria. __ ACP acts as the acyl carrier.

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter19: The Tricarboxylic Acid Cycle

Section: Chapter Questions

Problem 22P: Study Figure 19.18 and decide which of the following statements is false. Pyruvate dehydrogenase is...

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Cholesterol synthesis and ketogenesis share the first few reactions after which the pathways deviate. Provide a schematic presentation showing the production of ketone bodies from acetyl-CoA and where cholesterol synthesis deviates from this pathway (first intermediate that differs between the two pathways).
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Compare and contrast the pathway by which fatty acids are degraded (B-oxidation) with the pathway by which fatty acids are synthesized from acetyl-CoA. Comment on the following: (i) nature of the "activated" structures (ii) coenzymes involved (iii) stereochemistry of the intermediates (iv) sites where pathways occur
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?
How many acetyl CoA molecules are produced in one cycle of beta oxidation? How many cycles would it take to catabolize a stearic acid molecule (a fatty acid, [18:0]) into acetyl Co A units? a)How many acetyl CoA molecules would be produced? b) How many reduced nucleotides would be produced? c) If a molecule of glucose produces a net 32 ATP when completely catabolized, which do you think will produce more energy, one molecule of glucose or one molecule of stearic acid? Justify your answer.
The citrate cycle is a metabolic engine generating [ Select: "carbon monoxide", "NAD, FAD and GDP", "carbon dioxide, NADH, FADH, and GTP"] from the fuel [ Select : "triglycerides", "acetyl-CoA"]. It is considered a cycle since all components must be maintained beginning with the addition of the two carbons from acetyl-CoA to form [ Select ] ["succinate", "citrate"] from [ Select ]["fumarate", "oxaloacetate"]. The citrate cycle depends on the presence of oxygen since [ Select ]["oxygen is directly required in the citrate cycle", "oxygen is required for NADH and FADH2 oxidation, and their accumulation in the absence of electron transport results in feedback inhibition of the citrate cycle"] .
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D) Carbohydrate catabolism involves substrate-level phosphorylation. E) My answer is not here 27. The adduct acetoacetyl-acyl carrier protein is formed as an intermediate during fatty acid biosynthesis. The CO2 used to synthesize malonyl-S-CoA is lost. Would this help make the reaction more or less energetically favorable? A) Loss of CO2 increases entropy (AS) and therefore decreases the favorability of the reaction (AG). B) Loss of CO2 has no effect on entropy (AS) and therefore does not affect the favorability of the reaction (AG). C) Loss of CO2 increases entropy (AS) and therefore increases the favorability of the reaction (AG). D) Loss of CO2 decreases entropy (AS) and therefore decreases the favorability of the reaction (AG). E) Loss of CO2 decreases entropy (AS) and therefore increases the favorability of the reaction (AG).
How many acetyl CoA molecules can be produced during the complete β-oxidation of this fatty acid?
Which reaction below corresponds with substrate level phosphorylation? Fructose-1,6-bisphosphoglycerate >>>> G3P Pyruvate >>>> Acetyl-CoA Glucose >>>> Glucose-6-phosphate 1,3-bisphosphoglycerate >>>> 3-phosphoglycerate >>>> pyruvate Acetyl + Oxaloacetate >>>> Citrate
In the mitochondrion is a short-chain carnitineacyltransferase that can take acetyl groups from acetyl-CoA and transfer them to carnitine. How might this be related to lipid biosynthesis?
If a fatty acid containing 13 carbons is subjected to Beta oxidation, how many molecules of Acetyl CoA can be produced?