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Question 7 2 pts Citrate produced in the mitochondria is exported to the cytosol by the...
Choose the ONE BEST answer explaining how oxaloacetate and acetyl-CoA levels are balanced to maximize flux...
Choose the ONE BEST answer explaining how oxaloacetate and acetyl-CoA levels are balanced to maximize flux through the citrate cycle when energy charge in the cell is lovw Oxaloacetate is required for mitochondrial shuttle systems, and therefore it makes sense to activate pyruvate carboxylase by ATP and inhibit it by malate. None of the answers are correct. The best way to balance the input of carbon into the citrate cycle is to regulate the production of citrate using vitamins like...
Complete the sentences to correctly describe steps in fatty acid synthesis. Put the terms to the...
Complete the sentences to correctly describe steps in fatty acid synthesis. Put the terms to the appropriate blanks. Some terms will not be used, and some will be used more than once. Fatty acid synthesis begins with a preparatory step in which ____________ is transferred from ___________ to the ___________. However, it cannot pass through the membrane, so it is transported as ___________, which is cleaved to ____________ and ____________. In the cytosol, acetyl CoA is converted to ____________, a...
please answer both questions 6. Why is malate converted to pyruvate instead of oxaloacetate in the citrate shuttle?...
please answer both questions
6. Why is malate converted to pyruvate instead of oxaloacetate in the citrate shuttle? 7. Which molecule determines the fate of fatty-acyl CoA generated in the cytosol? Hint: consider which molecule regulates the enzyme that catalyzes the committed step of B oxidation.
6. Why is malate converted to pyruvate instead of oxaloacetate in the citrate shuttle? 7. Which molecule determines the fate of fatty-acyl CoA generated in the cytosol? Hint: consider which molecule regulates the enzyme...
Indicate whether the following statements are true or false. Justify your answer. a. ( 3 pts)...
Indicate whether the following statements are true or false. Justify your answer. a. ( 3 pts) _____ Acetyl- CoA carboxylase is activated by palmitoyl- CoA. b. (3 pts) ______ During the synthesis of palmitate in liver cells, the addition of malonyl- CoA to fatty acid synthase elongates the growing chain by three carbons. c. ( 3 pts) ______ Lipoprotein lipase is an intracellular enzyme.
Please help me with these questions. I got part of it right not sure about the...
Please help me with these
questions. I got part of it right not sure about the rest
Incorrect Question 2 0/1 pts The mechanism by which insulin decreases oxidation of fatty acids is: O Inhibition of malonyl CoA synthesis O Activation of acetyl CoA carboxylase O Dephosphorylation of carnitine acyl transferase O Dephosphorylation of ACCOA Partial Question 3 1/3 pts Select all the ways in which beta oxidation of fatty acids is regulated Phosphorylation/dephosphorylation of enyzmes Allosterically by ADP Allosterically...
Easy question, 30 min timed assignment, please answer ASAP, thanks. 1. Glycerol from hydrolysis of triacylglycerols...
Easy question, 30 min timed assignment, please answer ASAP,
thanks.
1. Glycerol from hydrolysis of triacylglycerols enters gluconeogenesis at. a. glyceraldehyde-3-phosphate. b. dihydroxyacetone phosphate. c. 1,3-bisphosphoglycerate. d. 3-phosphoglycerate. e. 2-phosphoglycerate. or tissue prefers to use ketone bodies such as acetoacetate as a source of fuel instead of glucose? a. heart muscle c. brain d. liver e. stomach b. adrenal cortex 3. The key enzyme in glycogen degradation is a. glycogen phosphatase. b. glycogen hydrolase. c. glycogen phosphorylase A d. glycogen...
2) Use this intermediate in fatty acid synthesis ACP The synthesis of this intermediate required one...
2) Use this intermediate in fatty acid synthesis ACP The synthesis of this intermediate required one molecule of malonyl CoA two molecules of malony CoA three molecules of malonyl COA four molecules of malony CoA five molecules of malonyl COA Not listed 7) The molecules shown below are intermediates found in one round of fatty acid synthesis after the condensation step. so ACP ACP Which round of fatty acid synthesis is occurring in the reactions shown? The intermediate above is...
3. (10 pts) Citrate synthase catalyzes the reaction: Oxaloacetate + acetyl – COA → citrate +...
3. (10 pts) Citrate synthase catalyzes the reaction: Oxaloacetate + acetyl – COA → citrate + HS – COA The standard free energy change for the reation is -31.5 k] . mol-1. a) Calculate the equilibrium constant for this reaction at 37°C. b) Would you expect this reaction to serve as a control point for its pathway (the citric acid cycle)?
Acetyl COA + H2O Coo- o coo- Citrate synthase CH2 -OH -ooc— CH2 CH2 NADH +...
Acetyl COA + H2O Coo- o coo- Citrate synthase CH2 -OH -ooc— CH2 CH2 NADH + H+ COO- Oxaloacetate Coo- Citrate Aconitase Malate dehydrogenase NAD+ - Çoo- Çoo- ---OH -O00—-H HO-CH CH2 CH2 Coo- Malate Coo- Isocitrate Isocitrate lyase Malate synthase COO- COO- Coh CH2 Acetyl COA + H2O Ho Glyoxylate coo Succinate Figure 17.23 Biochemistry, Seventh Edition 2012 W. H. Freeman and Company Question 1 (10 pts) Using diagrams show the pathway that is used to convert succinate to...
Question 2 1 pts The following molecule is and is produced by the enzyme CH, -C-...
Question 2 1 pts The following molecule is and is produced by the enzyme CH, -C- SCOA acetyl-CoA, citrate synthase acetyl-CoA, pyruvate dehydrogenase succinyl-CoA, alpha ketoglutarate dehydrogenase succinyl-CoA, succinyl CoA synthetase acyl-CoA, acyl-CoA synthetase acyl-CoA, acyl-CoA dehydrogenase
Choose the ONE BEST answer explaining how oxaloacetate and acetyl-CoA levels are balanced to maximize flux through the citrate cycle when energy charge in the cell is lovw Oxaloacetate is required for mitochondrial shuttle systems, and therefore it makes sense to activate pyruvate carboxylase by ATP and inhibit it by malate. None of the answers are correct. The best way to balance the input of carbon into the citrate cycle is to regulate the production of citrate using vitamins like...
please answer both questions
6. Why is malate converted to pyruvate instead of oxaloacetate in the citrate shuttle? 7. Which molecule determines the fate of fatty-acyl CoA generated in the cytosol? Hint: consider which molecule regulates the enzyme that catalyzes the committed step of B oxidation.
6. Why is malate converted to pyruvate instead of oxaloacetate in the citrate shuttle? 7. Which molecule determines the fate of fatty-acyl CoA generated in the cytosol? Hint: consider which molecule regulates the enzyme...
Please help me with these
questions. I got part of it right not sure about the rest
Incorrect Question 2 0/1 pts The mechanism by which insulin decreases oxidation of fatty acids is: O Inhibition of malonyl CoA synthesis O Activation of acetyl CoA carboxylase O Dephosphorylation of carnitine acyl transferase O Dephosphorylation of ACCOA Partial Question 3 1/3 pts Select all the ways in which beta oxidation of fatty acids is regulated Phosphorylation/dephosphorylation of enyzmes Allosterically by ADP Allosterically...
Easy question, 30 min timed assignment, please answer ASAP,
thanks.
1. Glycerol from hydrolysis of triacylglycerols enters gluconeogenesis at. a. glyceraldehyde-3-phosphate. b. dihydroxyacetone phosphate. c. 1,3-bisphosphoglycerate. d. 3-phosphoglycerate. e. 2-phosphoglycerate. or tissue prefers to use ketone bodies such as acetoacetate as a source of fuel instead of glucose? a. heart muscle c. brain d. liver e. stomach b. adrenal cortex 3. The key enzyme in glycogen degradation is a. glycogen phosphatase. b. glycogen hydrolase. c. glycogen phosphorylase A d. glycogen...
2) Use this intermediate in fatty acid synthesis ACP The synthesis of this intermediate required one molecule of malonyl CoA two molecules of malony CoA three molecules of malonyl COA four molecules of malony CoA five molecules of malonyl COA Not listed 7) The molecules shown below are intermediates found in one round of fatty acid synthesis after the condensation step. so ACP ACP Which round of fatty acid synthesis is occurring in the reactions shown? The intermediate above is...
3. (10 pts) Citrate synthase catalyzes the reaction: Oxaloacetate + acetyl – COA → citrate + HS – COA The standard free energy change for the reation is -31.5 k] . mol-1. a) Calculate the equilibrium constant for this reaction at 37°C. b) Would you expect this reaction to serve as a control point for its pathway (the citric acid cycle)?
Acetyl COA + H2O Coo- o coo- Citrate synthase CH2 -OH -ooc— CH2 CH2 NADH + H+ COO- Oxaloacetate Coo- Citrate Aconitase Malate dehydrogenase NAD+ - Çoo- Çoo- ---OH -O00—-H HO-CH CH2 CH2 Coo- Malate Coo- Isocitrate Isocitrate lyase Malate synthase COO- COO- Coh CH2 Acetyl COA + H2O Ho Glyoxylate coo Succinate Figure 17.23 Biochemistry, Seventh Edition 2012 W. H. Freeman and Company Question 1 (10 pts) Using diagrams show the pathway that is used to convert succinate to...
Question 2 1 pts The following molecule is and is produced by the enzyme CH, -C- SCOA acetyl-CoA, citrate synthase acetyl-CoA, pyruvate dehydrogenase succinyl-CoA, alpha ketoglutarate dehydrogenase succinyl-CoA, succinyl CoA synthetase acyl-CoA, acyl-CoA synthetase acyl-CoA, acyl-CoA dehydrogenase
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