Homework Answers
In this pathway biotin is a cofactor for the enzyme that carboxylates acetyl CoA into Malonyl CoA. Then the answer is the second option: a) Bioting b) Acetyl CoA c) Malonyl CoA
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In the first step of fatty acid synthesis, _a___ is carboxylated. The carboxyl group is then...
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...
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...
Reaction I is the first committed step in fatty acid synthesis, and reaction II is the...
Reaction I is the first committed step in fatty acid synthesis, and reaction II is the first step in the conversion of pyruvate to glucose in gluconeogenesis. Both acetyl-CoA and pyruvate are carboxylated at the expense of ATP. What is the chemical logic behind this energy expenditure in both cases? For full marks, provide your answer with reaction schemes and electron pushing arrows.
Need help with both questions, thank you! Question 13 The committed step of fatty acid synthesis...
Need help with both questions, thank you!
Question 13 The committed step of fatty acid synthesis is catalyzed by the enzyme acetyl CoA carboxylase. Which of the following accurately describes this enzyme? None of the choices is correct. All of the choices are correct Phosphorylation of the enzyme inhibits its activity. The inhibited enzyme can be stimulated by allosteric regulation of citrate. The dephosphorylated enzyme is active. Question 14 Formation of this molecule is the committed step of fatty acid...
Oxidative degradation of fatty acids results in production of _______, while the fatty acid biosynthesis pathways...
Oxidative degradation of fatty acids results in production of _______, while the fatty acid biosynthesis pathways use ________ as the substrate for hydrocarbon chain-extending reaction by 3-Ketoacyl ACP synthase. Select one: a. acetyl CoA ;;; malonyl CoA b. malonyl CoA ;;; acetyl CoA c. acetyl CoA ;;; acetyl CoA d. malonyl CoA ;;; malonyl CoA e. None of these
4. During the last step of the β-oxidation pathway for fatty acids, the intermediate below is con...
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4. During the last step of the β-oxidation pathway for fatty acids, the intermediate below is converted to CH3 (CH2) 12ČCH2C-SCoA a. CH3 (CH2) 12C00H + CoA b. 2 CH3C-SCOA CH3 (CH2) 126CH2CHsCH3C-SCoA d. 5. The intermediate below is produced during the fatty acid synthesis pathway. The next reaction of the pathway at the double bond, involves which type of reaction? CH3 (CH2 ) 12CH=CHCH2-ACP -CH2CH2OH- d. none of the above 6. The product of the first step...
EOS Fatty acid metabolism: Q1 1 point possible (graded) Fatty acid synthase is primed with two...
EOS Fatty acid metabolism: Q1 1 point possible (graded) Fatty acid synthase is primed with two molecules at the beginning of odd-chain fatty acid synthesis. What are these TWO molecules? Propionyl-COA Palmitoyl-CoA Malonyl-CoA Acetyl-COA I Acyl-Coa union How many molecules of malonyl-CoA would be invested to synthesize one molecule of the fatty acid shown above? How many molecules of NADPH would be invested to synthesize one molecule of the fatty acid shown above? How many molecules of ATP would be...
(91 fatty Acid Metabolism. The reactions of the fatty acid spiral are shown below. Use the...
(91 fatty Acid Metabolism. The reactions of the fatty acid spiral are shown below. Use the description on the left side of the page to classify the reactions and fil in the boxes on the right side of the page Aetivation Step. The activation of the fatty acid begins by the addition of CoA which will carry the fatty acid from the cytosol into the mitochondria. The product, which is a fatty acid with a CoA attached, is known as...
Fatty Acid Metabolism. The reactions of the fatty acid spiral are shown below. Use the description...
Fatty Acid Metabolism. The reactions of the fatty acid spiral are shown below. Use the description on the left side of the page to classify the reactions and fill in the boxes on the right side of the page Activation Step. The activation of the fatty acid begins by the addition of CoA which will carry the fatty acid from the cytosol into the mitochondria. The product, which is a fatty acid with a CoA attached, is known as a...
Question 1. Calculate the numbers of acetyl-CoA molecules produced when a fatty acid with 14 carbons...
Question 1. Calculate the numbers of acetyl-CoA molecules produced when a fatty acid with 14 carbons after undergoing beta-oxidation? Question 2. How many a) cycles of beta-oxidation will a fatty acid with 14 carbons undergo? Explain briefly. b)? How many acetyl-CoA molecules ? explain briefly? Question 3. Consider the synthesis of fatty acids: Answer the flowing: True or False: a) CoA carries intermediate b) Acetyl-CoA donates two carbon atoms c) Malonyl-CoA donates two carbon atoms d) The reverse of fatty...
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...
Need help with both questions, thank you!
Question 13 The committed step of fatty acid synthesis is catalyzed by the enzyme acetyl CoA carboxylase. Which of the following accurately describes this enzyme? None of the choices is correct. All of the choices are correct Phosphorylation of the enzyme inhibits its activity. The inhibited enzyme can be stimulated by allosteric regulation of citrate. The dephosphorylated enzyme is active. Question 14 Formation of this molecule is the committed step of fatty acid...
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4. During the last step of the β-oxidation pathway for fatty acids, the intermediate below is converted to CH3 (CH2) 12ČCH2C-SCoA a. CH3 (CH2) 12C00H + CoA b. 2 CH3C-SCOA CH3 (CH2) 126CH2CHsCH3C-SCoA d. 5. The intermediate below is produced during the fatty acid synthesis pathway. The next reaction of the pathway at the double bond, involves which type of reaction? CH3 (CH2 ) 12CH=CHCH2-ACP -CH2CH2OH- d. none of the above 6. The product of the first step...
EOS Fatty acid metabolism: Q1 1 point possible (graded) Fatty acid synthase is primed with two molecules at the beginning of odd-chain fatty acid synthesis. What are these TWO molecules? Propionyl-COA Palmitoyl-CoA Malonyl-CoA Acetyl-COA I Acyl-Coa union How many molecules of malonyl-CoA would be invested to synthesize one molecule of the fatty acid shown above? How many molecules of NADPH would be invested to synthesize one molecule of the fatty acid shown above? How many molecules of ATP would be...
(91 fatty Acid Metabolism. The reactions of the fatty acid spiral are shown below. Use the description on the left side of the page to classify the reactions and fil in the boxes on the right side of the page Aetivation Step. The activation of the fatty acid begins by the addition of CoA which will carry the fatty acid from the cytosol into the mitochondria. The product, which is a fatty acid with a CoA attached, is known as...
Fatty Acid Metabolism. The reactions of the fatty acid spiral are shown below. Use the description on the left side of the page to classify the reactions and fill in the boxes on the right side of the page Activation Step. The activation of the fatty acid begins by the addition of CoA which will carry the fatty acid from the cytosol into the mitochondria. The product, which is a fatty acid with a CoA attached, is known as a...
Question 1. Calculate the numbers of acetyl-CoA molecules produced when a fatty acid with 14 carbons after undergoing beta-oxidation? Question 2. How many a) cycles of beta-oxidation will a fatty acid with 14 carbons undergo? Explain briefly. b)? How many acetyl-CoA molecules ? explain briefly? Question 3. Consider the synthesis of fatty acids: Answer the flowing: True or False: a) CoA carries intermediate b) Acetyl-CoA donates two carbon atoms c) Malonyl-CoA donates two carbon atoms d) The reverse of fatty...
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