Part BWhat percentage of ATP energy is produced when 9.0 moles of glucose are oxidized into acetyl CoA? (7.3 kcal/mole ATP)Express your answer to two significant figures.?% ATP energy is producedSubmitRequest AnswerPart CWhat percentage of ATP energy is produced when 9.0 moles of glucose react in the citric acid cycle? (7.3 kcal/mole ATP)Express your answer to two significant figures.V ΑΣφ?% ATP energy is producedSubmitRequest Answer

Glycolysis generates net ATP = 2 ATP per mole of Glucose molecule Then end product of glycolysis -…

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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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Use your knowledge of fat metabolism, glycolysis, the TCA cycle, and oxidative phosphorylation to determine how many molecules of ATP equivalents are produced when glycerol undergoes biochemical combustion. Assume that each molecule of NADH produces 2.5 ATP and that each molecule of FADH2 produces 1.5 molecules of ATP during oxidative phosphorylation. Note that GTP is an ATP "equivalent." A. 14.5 B. 17 C. 19.5 O D.20.5
Page of 6 ZOOM + name: 3. In the last reaction of the citric acid cycle, malate is dehydrogenated to regenerate the oxaloacetate necessary for the entry of acetyl-CoA into the cycle: L-Malate + NAD+ → oxaloacetate + NADH + H* AG'° = 30.0 kJ/mol (a) Calculate the equilibrium constant for this reaction at 25 °C. (b) Because AG°' assumes a standard pH of 7, the equilibrium constant calculated in (a) corresponds to [oxaloacetate][NADH] Keq [L-malate][NAD*] The measured concentration of L-malate in rat liver mitochondria is about 0.20 mM when [NAD*]/[NADH] is 10. Calculate the concentration of oxaloacetate at pH 7 in these mitochondria. (c) To appreciate the magnitude of the mitochondrial oxaloacetate concentration, calculate the number of oxaloacetate molecules in a single rat liver mitochondrion. Assume the mitochondrion is a sphere of diameter 2.0 microns.
The glucose/glucose-6-phosphate substrate cycle involves distinct reactions of glycolysis and gluconeogenesis that interconvert these two metabolites. Assume that under physiological conditions, [ATP] = [ADP]; [P;] = 1 mM. Consider the glycolytic reaction catalyzed by hexokinase: ATP + glucose ADP + glucose-6-phosphate AG = - 16.7 kJ/mol (a) Calculate the equilibrium constant (K) for this reaction at 298°K, and from that, calculate the maximum [glucose-6-phosphate]/ Iglucose] ratio that would exist under conditions where the reaction is still thermodynamically favorable. (b) Reversal of this interconversion in gluconeogenesis is catalyzed by glucose-6-phosphatase: glucose-6-phosphate + H20 = glucose + P AG" = -13.8 kJ/mol
Consider a 24:1 △cis-9 fatty acid in the mitochondrion. For each fatty acid given, determine the following. 1. Gross ATP from b-oxidation cycles 2. Gross ATP from acetyl CoA produced 3. Gross ATP from conversion of propionyl CoA (if applicable) 4. Total number of ATP deducted 5. Total net ATP
We have discussed the aerobic metabolism of glucose extensively in this class. To capture and use the energy in glucose to make ATP, we must utilize 4 different sequential pathways/steps. Starting with one glucose molecule and eventually ending with CO, H;O and ATP, list the 4 pathways/steps in order and tell me what molecules enter each pathway, and what the final products of each pathway are. Edit View Insert Format Tools Table 12pt v Paragraph v BIUAv ev Tov : I
The glutamate dehydrogenase (GDH) catalyses the following reaction: *H3N- C H - CH₂ - CH₂ COO™ acide glutamique -COO + NAD+ + H₂O Time (min) A340 GDH COO™ с 5 1 2 3 4 1.760 1.718 1.675 1.635 1.595 CH₂ The answer: -1 - Vo 1.1.107 M.s-¹ - EA in 0.1 mL of GDH = 0.33 nkat CH₂ The activity of GDH is monitored in the sense of the formation of glutamate using the following conditions: 0.2 mL of 5 M ammonium sulphate 2.4 mL of buffer at pH 8 0.1 mL of NADH at 6.15 mg.mL-¹ (M = 709 g.mol-¹) 0.2 mL of 1 M a-ketoglutarate solution Warm mixture at 25 °C for 5 min Add 0.1 mL of GDH solution containing 1.6 mg.mL protein to start the reaction. COO CO acide a-cétoglutarique The change in absorbance at 340 nm is monitored, in a 1-cm cuvette, every minute for 10 min. Results are given in the table below: Data ENADH at 340 nm = 6220 M¹.cm¹ -1 + NH4+ NADH + H+ 6 1.550 7 8 10 9 1.510 1.489 1.476 1.451 Calculate the initial rate Vo of the reaction in M.s¹. - Calculate the enzyme activity of the volume of…
Calculate the ATP yield for the complete oxidation of a 13-carbon saturated fatty acid. (You should consider the ß-oxidation steps, processing of acetyl-CoA through the citric acid cycle, and electron transport. Production of one GTP should be considered the equivalent of production of one ATP. Enter your answer to three significant figures.) ATPS are gained for each 13-carbon fatty acid oxidized Submit Answer Try Another Version 9 item attempts remaining
Imagine a triglyceride comprised of (3) saturated C12 fatty acids. Calculate the number of ATP generated from the complete oxidation of one of these 12-carbon fatty acids to CO2 and water in the liver. Assume that each NADH = 2.5 ATP and each FADH2 = ETC generates 1.5 ATP. Any step that yields pyrophosphate as a product should be treated as an input (i.e. net loss) of (2) ATP.
Calculate the ∆G°' for the complete oxidation of acetate (C2H3O2-) to CO2 by: a) aerobic metabolism and Express ∆G°' as kJ mol-1 acetate. Use any method you choose but show your work.
What is the net yield of ATP when 2 molecules of pyruvate are completely oxidized? (enter numerical value only). explain the steps that produce each ATP
Activation of the fatty acid (converting it to fatty acyl-SCoA) requires the expenditure of 2 ATPs. Use your answers from parts B and C to calculate the total number of ATPs generated from the metabolism of a saturated fatty acid with 18 carbon atoms including both the citric acid cycle and the ββbeta-oxidation pathway as well as the initial ATP required to produce the acyl-SCoA molecule that starts the process. Express your answer as an integer.
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).

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What percentage of ATP energy is produced when 9.0 moles of glucose are oxidized into acetyl CoA? (7.3 kcal/mole ATP) Express your answer to two significant figures.