The carbon skeletons of many amino acids can be used to replenish theintermediates of the citric acid cycle.Select one:TrueO FalseWhich of the following compound is a positive allosteric modifier of the enzymepyruvate carboxylase?Select one:a. BiotinO b. OxaloacetateO c. Fructose-6-PO d. ATPOe. Acetyl-CoAWhich of the following compounds serve as a primary link between the TCA cycleand the urea cycle?Select one:O a. succinateb. fumarateO c. oxaloacetateO d. malateO e. citrateA specific inhibitor for succinate dehydrogenase is:Select one:O a. Citrateb MalonateO c. ArseniteO d. FluorideO e. Cyanide

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Answered: The carbon skeletons of many amino…

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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Consider the carbohydrate maltose. a. How many molecules of acetyl CoA are formed from its complete catabolism?b. How many rounds of Citric acid Cycle must occur to complete catabolism?c. How many rounds of electron transport chain and oxidative phosphorylation?d. Calculate the number of molecules (moles) of ATP formed (net) by the complete catabolismof maltose (show your calculation).e. Calculate number of moles of ATP formed per gram of maltose metabolized (molar mass:342.3 g/mol).
A liver cell undergoing gluconeogenesis is incubated in the presence of 14C labelled carbonic acid (H14CO3H). Soon after the incubation begins, the gluconeogenic products and intermediates from these cells are isolated. Where would you expect the radiolabelled carbon to be found? O C1 of lactate O C1 of glucose O Carbon dioxide O C3 of phosphoenol pyruvate O C1 of phosphoenolpyruvate
Draw the catalytic mechanism of the reaction catalyzed by glyceraldehyde 3-phosphate dehydrogenase(GAPDH). In this reaction, which amino acid acts as a nucleophile? Which compound is oxidized andwhich is reduced? Which product is referred to as a “high-energy compound” and why?
Describe how a) Mean Arterial Pressure, b) Maximal Oxygen Consumption, and c) Blood Flow are determined using its formula. In addition, you should explain what those factors are including cardiac output, stroke volume, heart rate, resistance, a-vO2 difference, etc. Describe how many ATPs can be generated by complete cycles of beta oxidation of free fatty acid with 20 carbons. You should indicate how many cycles of beta oxidation and Krebs cycle, and total number of products as well
1)You add a drug to cells that can pass through hydrophilic or hydrobic environments (e.g., membranes & cytosol). The drug specifically prevents the binding of KDEL (ER retention signal) to any other molecules. In the short term, what would happen to the synthesis and localization of translocon proteins? a. New complete translocon proteins would be made, but they would end up in the golgi apparatus. b. New complete translocon proteins would be made, but they would end up at the plasma membrane c. No new intact translocon proteins would be synthesized d. New complete translocon proteins would be made, but they would be secreted e. New complete translocon proteins would be made and localized normally
in the synthesis of glycogen, the glycogen synthase uses UDP-glucose rather than glucose. Explain in detail way.
Order the steps that results in a triacylglycerol containing two palmitic acids and one stearic acid. a. Diacylglycerol reacts with an fatty-acyl-CoA b. Phosphate is remove from phosphatidic acid to form diacylglycerol c. Two of the fatty acyl-CoAs react with glycerol-3-phosphate d. An elongase produce stearic acid e. Stearoyl-CoA is synthesized…
Years ago there was interest in using uncouplers such as dinitrophenol as weight control agents. Presumably, fat could be oxidized without concomi- tant ATP synthesis for re-formation of fat or carbohydrate. Why was this a bad (i.e., fatal) idea?
draw and Identify different types of organic reaction mechanims in the following metabolic pathways. 1. Catabolism of triacylglycerols- beta-oxidation pathway2. Biosynthesis of fatty acids from Acetyl CoA3. Glycolysis (from glucose to two molecules of pyruvate)
coo- 21 CH2 316 НО-С-СОО- HOC COO- 4 CH2 | 5, °coo-
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.
How many ATP molecules can be generated from one mol of 14CH3-COOH? (The conversion of acetate to acetyl-CoA requires the consumption of 2 ATP.)

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