During the oxidation process of glycerol to yield D-glyceraldehyde 3-phosphate, one ATP is utilized in the first step of the pathway yielding L-glycerol 3-phosphate. Explain how there is an actual energy yield in the form of ATP when glycerol is oxidized.
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During the oxidation process of glycerol to yield D-glyceraldehyde 3-phosphate, one ATP is utilized in the...
Glyceraldehyde-3-phosphate dehydrogenase catalyzes the phosphorylation of glyceraldehyde-3-phosphate, but unlike other glycolytic reactions, it does not require energy investment from ATP. This reaction occurs in two stages: oxidation/reduction and phosphorylation. Why is the oxidation/reduction reaction necessary to make phosphorylation favorable? Choose one: A. The oxidation/reduction reaction is necessary to oxidize phosphate, allowing addition to the substrate. B. The oxidation/reduction reaction is necessary to form an intermediate with a large free energy of hydrolysis. C. The oxidation/reduction reaction is necessary to produce...
In the formation of the thioester in the oxidation of Glyceraldehyde-3-phosphate by Glyceraldehyde-3-dehydrogenase which of the following statements is true? A) The thioester intermediate is more stable (lower free energy) than the reactant B) the thioester intermediate is less stable (higher free energy) than the reactant C) the thioester intermediate is more stable (lower free energy) than the product D) In the organic chemistry lab, thioester allows for the formation of acyl-phosphate E) in the organic chemistry lab, thoiester formation...
The reaction converting glycerol to glycerol-3-phosphate is energetically unfavorable by 9.2 kJ. The reaction of ATP with water to yield ADP, hydrogen phosphate ion, and hydrogen ion is energetically favorable by 30.5 kJ. These reactions are coupled so that the overall process is energetically favorable. What is ΔG for the overall process?
8. In glycolysis, Step 6: The Oxidation of Glyceraldehyde-3-Phosphate is thermodynamically unfavorable under standard conditions. To "pull" the reaction forward, Step 6 is coupled with Step 7: The 1st Production of ATP. What is the meaning of the term coupled? Calculate the overall AG" for Steps 6 and 7.
In one step of glycolysis, glyceraldehyde 3-phosphate is oxidized by NAD+ to yield 3-phosphoglycerate and NADH. 1) Consider that reaction, in the direction written. Which chemicals) is(are) losing electrons, and which chemical(s) is(are) gaining electrons? It's best to answer this in a clear complete sentence. 2 2 2 Table 10-2 Standard Reduction Potentials for Redox Pairs of Biological Relevance* Redox Pair Number of (oxidized form → reduced form) Electrons E.(V) acetate pyruvate 2 -0.70 succinate → a-ketoglutarate 2 -0.67 acetate...
A & B please help!!
5. If a bacterium using aerobic respiration was to degrade one lipid molecule that is composed of a glycerol molecule, a 12 carbon fatty acid an 18 carbon fatty acid, how many ATP would that cell make? Use the information below to build up your total number of ATP molecules. Assume no other carbon source is available. A. Glycerol is broken down to glyceraldehyde 3-phosphate, a glycolysis intermediate via the following pathway. Notice this process...
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Juction reaction In one step of glycolysis, glyceraldehyde 3-phosphate is oxidized by NAD+ to yield 3-phosphoglycerate and NADH. 1) Consider that reaction, in the direction written. Which chemical(s) is/are) losing electrons, and which chemical(s) is(are) gaining electrons? It's best to answer this in a clear complete sentence! 2) Calculate the standard reduction potential for this reaction. Show a reasonable amount of your work (you don't need to show every step in a calculation, but at least show your...
22. In glycolysis, during oxidation electrons are removed by: Α. ΑΤΡ B. molecular oxygen C. glyceraldehyde 3 phosphate D. NAD+ 23. During glycolysis ATP and Mg2+ coenzymes function: A. for phosphoglyceraldehyde 3 phosphate dehydrogenase B. for pyruvic kinase C. for phosphoglucoisomerase D. for hexokinase
NAD+ -dependent Glyceraldehyde-3-phosphate + Dehydrogenase from Thermoproteus tenax. 1. Name the three enzymes that catalyze irreversible, regulated reactions in glycolysis as studied in class. 2. What is the significance of the GAPDH reaction in E. coli to glycolysis? 3. How does the reaction catalyzed by GAPDH from T. tenax presented here differ from the reaction carried out in E. coli? 4. The activity of the GAPDH enzyme was assayed in the presence of a constant amount of glyceraldehyde-3-phosphate and an...
(8 pts) During glycolysis (a biological pathway we will investigate later in the semester), glyceraldehyde- 3-phosphate is oxidized and phosphorylated to a carboxylic acid derivative (a phosphoanhydride). Using thermodynamic values for the catalyzed and uncatalyzed reactions below, determine equilibrium constant (K ) for the reaction. At STP, does the reaction equilibrium lie on the reactants or products side of the reaction? Glyceraldehyde- CH2OPO,2- 3-Phosphate CH,OPO, Dehydrogenase НО. HO OPO, Н NADH NAD -at STP (AG°° = 6.3 kJ/mol), calculate Key...