A deficiency in which of the following B vitamins would NOT directly impact the ability of cells to convert pyruvate to acetyl-CoA? Thiamin (B1) Riboflavin (B2) Niacin (B3) Pantothenoic Acid (B5) Deficiencies in all of the above would directly impact the ability of cells to convert pyruvate into acetyl-CoA

A deficiency in which of the following B vitamins would NOT directly impact the ability of cells to convert pyruvate to acetyl-CoA? Thiamin (B1) Riboflavin (B2) Niacin (B3) Pantothenoic Acid (B5) Deficiencies in all of the above would directly impact the ability of cells to convert pyruvate into acetyl-CoA

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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Which of the following is true regarding the oxidation of 1 molecule of palmitate to 8 molecules of acetyl CoA by the beta-oxidation pathway? 7 molecules of FADH2 are formed None of the above 8 molecules of FADH2 are formed 8 molecules of NADH are formed BOTH 8 molecules of NADH are formed AND 8 molecules of FADH2 are formed
Mammals cannot undergo net synthesis of carbohydrate from acetyl-CoA, but the carbons of acetyl-CoA can be incorporated into glucose and amino acids. Present pathways by which this could come about.
Which of the following is the correct account for acetyl CoA, NADH , and FADH2 for the beta-oxidation of stearic acid (saturated fatty acid with 18 carbon atoms)? -9;8;5 -9;8;8 -18;9;9 -18;18;18 -9;9;9
The sources of the three (3) carbons in malonyl-Coa is/are: a. 1 C from C02 and 2 C from acetyl-CoA b. 1 C from HCO3- and 2 C from acetyl-CoA c. 1 C from biotin and 2 C from acetyl-CoA d. All three C from acetyl-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.
A shared function of thiamin and riboflavin is 1. that pork provides an excellent nutrient source for both vitamins. 2. they both function as a coenzyme to Acetyl-CoA. 3. they are both fat-soluble vitamins. 4. they both participate in the citric acid cycle as coenzymes.
Which of the following statements is falseconcerning acetyl CoA carboxylase (ACC)? ACC is more active when protomers condense to form polymers Palmitoyl CoA serves as a feedback inhibitor The source of carbons for ACC comes from the carbon skeletons of malate that is exported from the matrix of the mitochondria in the form of malate Binding of glucagon triggers cAMP production, which leads to inhibition of ACC
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
In the pyruvae dehydrogensae complex, acetyl-coa is released by the dihydrolipoyl transacetylase activity. What is the purpose of the following enzymatic activity.
How many molecules of acetyl-CoA are produced by catabolism of the following fatty acids, and how many b oxidations are needed?(a) Palmitic acid, CH3(CH2)14COOH(b) Lignoceric acid, CH3(CH2)22COOH
Which of the following statements are TRUE?Multiple answers are accepted for this question a .Two molecules of CO2 are produced each time a molecule of Acetyl-CoA is oxidized. b. During the first turn of the TCA Cycle the carbon atoms of Acetyl-CoA become CO2. c. The number of molecules of ATP that can be produced in the Citric Acid Cycle by substrate level phosphorylation of ADP from two molecules of Acetyl-CoA is 30. d. Fumarate contains a trans double bond. The cis isomer of Fumarate is Maleate which cannot serve as carbon source for a cell. e. Lack of O2 would decrease the rate of the Citric Acid Cycle in red blood cells. f. If a potent inhibitor of Succinyl-CoA Synthetaseis is applied to liver cells both energy production and synthesis of carbohydrate would be affected. g. The overall chemical changes that occur during one complete turn of the Citric Acid Cycle is the complete oxidation of one molecule of Acetyl-CoA plus the production of two molecules of CO2 plus the…
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