During times of increased glucose-6-phosphate concentration, the overall rate of the citric acid cycle will ________....
Each option is either increased or decreased QUESTION 5 The citric acid cycle must operate continuously to provide electrons for ATP generation. It is also a sensor of metabolic status and is able to fine tune metabolic flux through coordinated allosteric regulation of key enzymes in the pathway. Indicate the effect of the change in the following metabolite concentrations on the overall flux of the pathway. Change in metabolic status change in metabolic flux through citric acid cycle increased energy...
6. In mammals, which of the following does not occur during the citric acid cycle? A) formation of a-ketoglutarate. D) metabolism of acetate to carbon dioxide and water. B) net synthesis of oxaloacetate from acetyl-CoA. E) oxidation of acetyl-CoA. C) generation of NADH and FADHz. 7. Which of the following reaction generates GTP(ATP) in the CAC? A) Isocitrate to a-ketoglutarate. D) Fumarate to Malate. B) Malate to Oxaloacetate. E) Succinyl-CoA to Succinate. C) a-ketoglutarate to Succinyl-CoA.
The effect of inorganic phosphate on the activity of the citric acid cycle can be studied in mitochondrial extracts by monitoring the rate of CO2 production. a. Why is the citric acid cycle dependent upon inorganic phosphate? b. Acetyl CoA is added to a rat liver mitochondrial extract containing excess NAD+, FAD, and GDP. The rate of CO2 production increases and then levels off very quickly; the addition of addition acetyl CoA has no effect. Explain why CO2 production begins...
Steps 6 and 8 of the citric acid cycles are _____ reactions. phosphate-transfer hydrolysis oxidation–reduction carboxylation The 4-carbon intermediates of the citric acid cycle can be used for _____. gluconeogenesis fatty acid synthesis nucleotide synthesis glycolysis Additional oxaloacetate for the citric acid cycle can be generated in one step from pyruvate glyoxylate citrate acetyl-CoA ΔG°' for a reaction is 800 J · mol–1. What is ΔG at 37°C when the ratio of product to reactant concentrations is 0.6? 640 J...
During the citric acid cycle (TCA) how many times the cycle must turn until an entire GLUCOSE molecule is completely oxidized? A.) 2 B.) 4 C.) 1 D.) 3
Part B Use the structures given in the cycle shown before this part identify the enzymes involved in each step of the citric acid cycle by completing each sentence Match the words in the left column to the appropriate blanks in the sentences on the right. View Available Hint(s) Reset Help isocitrate dehydrogenase aconitase citrate synthase fumarate hydratase succinate dehydrogenase succinyl-CoA synthetase a-ketoglutarate dehydrogenase malate dehydrogenase In step 1, oxaloacetate condenses with acetyl-CoA to form citrate, which is catalyzed by...
Which of the following is not a net product of the citric acid cycle for each molecule of pyruvate generated in glycolysis? Select one: a. 1 ATP (GTP) b. 1 acetyl coA c. 3 NADH d. 1 FADH2 Question 2 Which of the following is NOT an end product for an acetyl group that enters the citric acid cycle? Select one: a. ATP b. NADH c. FADH2 d. oxaloacetate Question 3 Once they have been processed through the citric acid...
5. Overall Summary equation of Citric Acid Cycle? Please include number of CoA, NAD, FAD, GDP and phosphates used or produced. 3 pts
1) In the CAC (citric acid cycle)... (Choose All) A) CO2 is released as a waste product B) electron carriers are reduced C) ATP is synthesized via oxidative phosphorylation D) acetyl CoA is completely oxidized 2) During the CAC (citric acid cycle), the two acetyl CoAs (what remains from one glucose molecule) yield...(Choose All) A) 8 reduced electron carriers B) 2 ATPs C) 2 oxaloacetate molecules D) 4 CO2
Rank each of the following in terms of their appearance in the cell during carbohydrate catabolism. 1 represents the first to appear, and 6 represents the last. (Assume only a single round of carbohydrate catabolism took place.) (6 items) (Drag and drop into the appropriate area) Fructose-1,6-bisphosphate Glyceraldehyde-3-phosphate Pyruvate Glucose Succinyl-CoA Citric acid