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What would be the effect of a mutation that enhances the activity of pyruvate dehydrogenase kinase?...
I1. Mammals lack the enzyme a. Lactate dehydrogenase b. Pyruvate kinase Alcohol Dehydrogenase c. d. Pyruvate...
I1. Mammals lack the enzyme a. Lactate dehydrogenase b. Pyruvate kinase Alcohol Dehydrogenase c. d. Pyruvate decarboxylase None of the above are correct e. 12. The first reaction of the Krebs cycle combines Oxaloacetate and Acetyl CoA to make Citrate b. a. Malate and NADH to make Citrate a-ketoglutarate and citrate to make CO2 d. c- Succinate and Citrate to make Oxaloacetate 13. The electrons held by NADH and FADH, are donated to the which complexes in the ETC respectively?...
1.Predict the effect of a large amount of acetyl-CoA on the activity of pyruvate dehydrogenase and...
1.Predict the effect of a large amount of acetyl-CoA on the activity of pyruvate dehydrogenase and the rate of glycolysis. Note: pyruvate dehydrogenase is the enzyme that catalyzes the formation of acetyl-CoA from pyruvate. a. Pyruvate dehydrogenase activity will decrease while the rate of glycolysis will increase. b. Both pyruvate dehydrogenase activity and the rate of glycolysis will decrease. c. Pyruvate dehydrogenase activity will increase while the rate of glycolysis will decrease. d. The rate of glycolysis will increase, thereby,...
Why does acetyl CoA, a product of fatty acid catabolism, influence the pyruvate dehydrogenase complex (PDH),...
Why does acetyl CoA, a product of fatty acid catabolism, influence the pyruvate dehydrogenase complex (PDH), a control point in carbohydrate catabolism? When fatty acid breakdown is high, ADP is low and PDH is inhibited by phosphatase activity. When fatty acid breakdown is inhibited, PDH is inhibited by acetyl CoA due to phosphatase activity. When fatty acid breakdown is high, NADH levels drop, causing an increase in E2 activity. When fatty acid breakdown is high, PDH is inhibited by acetyl...
1. There's a branching point in cellular respiration involving pyruvate. Pyruvate can undergo lactic acid fermentation...
1. There's a branching point in cellular respiration involving pyruvate. Pyruvate can undergo lactic acid fermentation or enter the mitochondria to enter the citric acid cycle. What determines what happens to pyruvate? A. Energy demands of the cell B. 15% concentrated power of will C. pH of the intracellular fluid D. Presence/absence of oxygen In the fed state, how is glucose used in the body? Select all correct answer choices. A. Used in glycogenesis to create glycogen in skeletal muscles...
Indicate all of the following statements that are true. Options: 1. ATP is an indirect product...
Indicate all of the following statements that are true. Options: 1. ATP is an indirect product of the citric acid cycle 2. Acetyl CoA can increase the pool of citric acid cycle intermediates 3. Fatty acids can increase the pool of citric acid cycle intermediates 4. ADP inhibits α-ketoglutarate dehydrogenase 5. The pool of mitochondrial oxaloacetate can be increased by pyruvate 6. All enzymes of the citric acid cycle are found soluble and free in the mitochondrial matrix
Which describes the effect of cyanide on cellular respiration? Question 20 of 25 ) Which describes...
Which describes the effect of cyanide on cellular
respiration?
Question 20 of 25 ) Which describes the effect of cyanide on cellular respiration? O inhibits the the breakdown of acetyl-CoA by the citric acid cycle O inhibits the function of pyruvate kinase in glycolysis O inhibits the function of cytochrome c oxidase in the electron transport chain O inhibits the production of acetyl-CoA by the pyruvate dehyrogenase complex
3 20 The conversion pyruvate to either ethanol or lactate occurs A. when there is an abundance of pyruvate but a deficiency of onygen B. when there is an abundance of BOTH pyruvate and oxygen C....
3 20 The conversion pyruvate to either ethanol or lactate occurs A. when there is an abundance of pyruvate but a deficiency of onygen B. when there is an abundance of BOTH pyruvate and oxygen C. when there is a deficiency of BOTH pyruvate and oxygen D. for the regeneration of NADH so that hydrolysis of ATP can continue to fuel the glycolysis pathway Explain how gluconeogenesis differs from gtycolysis 21 Gluconeogenesis is simply the reverse of all 10 steps...
A rabbit fleeing a coyote and a duck's extended flight during migration both involve muscular activity...
A rabbit fleeing a coyote and a duck's extended flight during migration both involve muscular activity with high demands for metabolic fuel. However, the source of fuel and the pathways for ATP production differ. A rabbit's short-term need for ATP is supplied by the breakdown of stored glycogen and glycolysis under anaerobic conditions. ATP for a duck's extended flight is supplied by the breakdown of fats to acetyl-CoA, the citric acid cycle, and oxidative phosphorylation. The short-term intense run and...
Steps 6 and 8 of the citric acid cycles are _____ reactions. phosphate-transfer hydrolysis oxidation–reduction carboxylation...
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...
1. Select the TRUE statement about the citric acid cycle. A. Isocitrate dehydrogenase is a multienzyme...
1. Select the TRUE statement about the citric acid cycle. A. Isocitrate dehydrogenase is a multienzyme complex that is very similar to the pyruvate dehydrogenase complex B. The two decarboxylation steps occur right after each other, first via oxidative alpha- decarboxylation, then via oxidative beta- decarboxylation. C. In one turn of the cycle, the two carbons that enter the cycle as acetyl CoA are the same two carbons that are released as CO2. D. A flavin containing dehydrogenase enzymes oxidizes...
I1. Mammals lack the enzyme a. Lactate dehydrogenase b. Pyruvate kinase Alcohol Dehydrogenase c. d. Pyruvate decarboxylase None of the above are correct e. 12. The first reaction of the Krebs cycle combines Oxaloacetate and Acetyl CoA to make Citrate b. a. Malate and NADH to make Citrate a-ketoglutarate and citrate to make CO2 d. c- Succinate and Citrate to make Oxaloacetate 13. The electrons held by NADH and FADH, are donated to the which complexes in the ETC respectively?...
Which describes the effect of cyanide on cellular
respiration?
Question 20 of 25 ) Which describes the effect of cyanide on cellular respiration? O inhibits the the breakdown of acetyl-CoA by the citric acid cycle O inhibits the function of pyruvate kinase in glycolysis O inhibits the function of cytochrome c oxidase in the electron transport chain O inhibits the production of acetyl-CoA by the pyruvate dehyrogenase complex
3 20 The conversion pyruvate to either ethanol or lactate occurs A. when there is an abundance of pyruvate but a deficiency of onygen B. when there is an abundance of BOTH pyruvate and oxygen C. when there is a deficiency of BOTH pyruvate and oxygen D. for the regeneration of NADH so that hydrolysis of ATP can continue to fuel the glycolysis pathway Explain how gluconeogenesis differs from gtycolysis 21 Gluconeogenesis is simply the reverse of all 10 steps...
A rabbit fleeing a coyote and a duck's extended flight during migration both involve muscular activity with high demands for metabolic fuel. However, the source of fuel and the pathways for ATP production differ. A rabbit's short-term need for ATP is supplied by the breakdown of stored glycogen and glycolysis under anaerobic conditions. ATP for a duck's extended flight is supplied by the breakdown of fats to acetyl-CoA, the citric acid cycle, and oxidative phosphorylation. The short-term intense run and...
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