5.Consider the decarboxylation of dimethyloxaloacetate 7 to 3-methyl-2-oxobutyrate 8shown belowH3COcat. Cu²+& CO2CH3OH (aq)cat. Cu²+no reactionCH3OH (aq)9a. Provide a mechanism to account for the fact that Cu2+ catalyzes this reaction.b. In one sentence explain why Cu2+ does not similarly catalyze the decarboxylationof 9.

Answered: Image /qna-images/answer/ea5fd5ae-0a10-4364-b395-94029cc30298.jpg

Answered: 5. Consider the decarboxylation of…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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2. a. Label the following structures as ATP, ADP, AMP, P₁, PPi, or Adenosine. Place your answers in the boxes provided. HO H OH H OH OH O N. H H OH + ATP NH₂ . + ADP 01210 ++++++ O-AMP O O Adenosine *+-+ O 0=210 HO b. Put an "X" in the box for the reaction that is thermodynamically most favorable. OH OPP OPP Adenine + AMP + Adenosine
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3. (а) (coenzyme A), NAD+ (oxidized nicotinamide adenine dinucleotide), FAD (oxidized flavin adenine dinu- cleotide), and a five-membered ring for oxidized lipoamide, and using structural formulas outline the reactions for the oxidative decarboxylation of a-ketoglutarate catalyzed by the aKG dehydrogenase complex. Name the 3 enzymes catalyzing the reactions underlying the conversion of a-ketoglutarate. Using the following abbreviations for cofactors: TPP (thiamine pyrophosphate), COASH
5. Given the following information tables, determine in which cell type cleavage of the terminal phosphate from ADP yields the greatest actual change in free energy. (Please work in kJ/mol.) TABLE 13-6 Standard Free Energies of Hydrolysis of Some Phosphorylated Compounds and Acetyl-CoA (a Thioester) TABLE 13-5 Total Concentrations of Adenine Nucleotides, Inorganic Phosphate, and Phosphocreatine in Some Cells AG (kJimol) (kcalimol) Concentration (MM) Phosphoenolpyruvate 1,3-Bisphosphoglycerate (+3-phosphoglycerate + P) Phosphocreatine -61.9 -14.8 ATP ADP AMP P, PCr Rat hepatocyte Rat myocyte 49.3 -11.8 3.38 1.32 0.29 4.8 -43.0 -103 8.05 0.93 0.04 8.05 28 ADP (+ AMP + P) -32.8 -7.8 -7.3 Rat neuron 2.59 0.73 0.06 2.72 4.7 ATP (+ ADP + P) Location of -30.5 Human erythrocyte 225 0.25 0.02 1.65 ATP (+ AMP • PP) AMP (+ adenosine P) cleavage is important! 45.6 -10.9 E. coli cell 7.90 1.04 0.82 7.9 -14.2 -34 For erythrocytes the concentrations are those of the cytosol (human erythrocytes lack a…
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38. The shown reaction is one of the four repeating steps during fatty acid biosynthesis. Which of the following statements is correct? 유 CH3-C-CH₂-C-S-ACP A B OH 유 CH3-C-CH₂-C-5-ACP → A. The small molecule in box A is NADPH + H* B. It is the second reduction reaction during fatty acid biosynthesis C. Both A and B D. Neither A nor B
35. Which of the following statements is true for the shown reaction? P-O-CH₂ 2 HOTHS HO OH OH A A. activated by citrate B. activated by ATP D DO-CH KH OH C. endergonic D. inhibited by fructose 2,6-bisphosphates E. None of the above CH₂0-℗ HQ OH B
5.4. If 32P labeled (radioactive phosphate) inorganic phosphate were introduced to erythrocytes undergoing glycolysis which of the following molecules would you expect to detect 32P in Glycolytic intermediates? A. Fructose 1-6 bisphosphate B. 3-Phosphoglyceraldehyde C. Dihydroxyacetone phosphate D. 2-Phosphoglycerate E. 1-3 bisphosphoglycerate F. Phosphoenolpyruvate G. 3-Phosphoglycerate H. Pyruvate I. None of the above is it E?

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