Why is the conversion of pyruvate to acetyl-CoA considered irreversible in animals? Why is acetyl-CoA only...
Why is the conversion of pyruvate to acetyl-CoA considered irreversible in animals? Why is acetyl-CoA only considered ketogenic and not glucogenic, even though it enters the TCA cycle to form citrate? How do plants make acetyl-CoA glucogenic?
Homework Answers
Acetyl co A is not glucogenic because pyruvate dehydrogenase enzyme can not make acetyp co A back into glucose thats why this process is not glucogenic and said that it is ketogenic.
Plants make acetyl co A glucogenic by the gluconeogensis concept i.e from fat and the protein they can make glucose ,firstly fatty acids,glucogenic amino acids make the acetyl co A and then pyruvate ehich is the major precursor of the glucose formation in gluconeogenesis.Lactate is also a precursor.
After the pyruvate is summed up with glycerol and amino acids to make glucose.
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Why is the conversion of pyruvate to acetyl-CoA considered
irreversible in animals? Why is acetyl-CoA only...
Which of the following is an anaplerotic reaction for the citric acid cycle? O conversion of pyruvate to acetyl-CoA...
Which of the following is an anaplerotic reaction for the citric acid cycle? O conversion of pyruvate to acetyl-CoA O conversion of glutamic acid to e-ketoglutarate O conversion of citrate to oxaloacetate and acetyl-CoA conversion of oxaloacetate to pyruvate O conversion of succinyl-Cos to heme
Stage 2: Monosaccharide Degradation to Acetyl CoA (Glycolysis + Pyruvate Conversion) Pyruvate: Aerobic and Anaerobic Conversion...
Stage 2: Monosaccharide Degradation to Acetyl CoA (Glycolysis + Pyruvate Conversion) Pyruvate: Aerobic and Anaerobic Conversion 1. Define what it means for a biochemical reaction to be aerobic vs. anaerobic. List what pyruvate will be converted to under each set of conditions. Conditions Definition Pyruvate Conversion Product aerobic anaerobic 2. In the space below, write the coupled reaction for the aerobic conversion of pyruvate, labeling the name of each reactant and product in the reaction. 3. Even though oxygen is...
Metabolic charts show isoleucine entering the TCA cycle as acetyl-CoA. However, isoleucine is considered glucogenic. Explain...
Metabolic charts show isoleucine entering the TCA cycle as acetyl-CoA. However, isoleucine is considered glucogenic. Explain how this is possible.
A) Acetyl coA is made from pyruvate in the [ Select ] ["mitochondrial matrix", "cytoplasm", "",...
A) Acetyl coA is made from pyruvate in the [ Select ] ["mitochondrial matrix", "cytoplasm", "", ""] by [ Select ] ["pyruvate dehydrogenase", "succinate dehydrogenase"] complex. In this process, the acetyl group is moved between enzymes within the complex by the [ Select ] ["lipoamide", "TPP"] . The [ Select ] ["dihydrolipoyl transacetylase", "pyruvate dehydrogenase component"] is the enzyme in which acetyl coA is actually formed. The [ Select ] ["FADH2", "lipoamide"] in the dihydrolipoyl dehydrogenase donates two electrons to...
during cellular respiration how many NADH are produced during the conversion of pyruvate to acetyl CoA...
during cellular respiration how many NADH are produced during
the conversion of pyruvate to acetyl CoA per glucose
molecule?
During cellular respiration how many NADH are produced during the conversion of pyruvate to acetyl CoA per glucose molecule? 00 ООО
8. Draw the overall coupled reaction showing the conversion of pyruvate into acetyl CoA. dono STEP...
8. Draw the overall coupled reaction showing the conversion of pyruvate into acetyl CoA. dono STEP 2 nach do not ww what are true. Ir raise, change one word in the statement so that it is true. a. The pyruvate produced from glycolysis must be consumed in some way or glycolysis stops. b. Glycolysis produces ATP directly. too C. Glycolysis breaks down glucose into acetyl CoA. d. Glycolysis is aerobic
4. (20 points) The reaction of pyruvate to acetyl-CoA and CO2 is the bridge reaction between...
4. (20 points) The reaction of pyruvate to acetyl-CoA and CO2 is the bridge reaction between glycolysis and the citric acid cycle. The carbon atoms in pyruvate are numbered and where they end up in the products are indicated CO0Θ 2 C=O + HS-CoA 3 CH3 Pyruvate S-COA 2C=O 3 CH3 Acetyl CoA Pyruvate dehydrogenase +1 CO2 a) Is C atom 1 in CO2 in a more reduced state or more oxidized state compared to its state in pyruvate? Why?...
Describe “hub” molecules acetyl CoA and pyruvate that serve different pathways. Explain metabolic regulation favoring metabolic pathway choices leading to and from hub molecules. Describe how C.A.C. s...
Describe “hub” molecules acetyl CoA and pyruvate that serve
different pathways. Explain metabolic regulation favoring metabolic
pathway choices leading to and from hub molecules. Describe how
C.A.C. serves as a “hub “pathway. Use picture as a reference.
Pyruvate Glucose Fatty acids sterols pyruvate carboxylase Acetyl-CoA PEP carboxykinase Glutamine Citrate Phosphoenolpyruvate (PEP) Proline Arginine Oxaloacetate PEP carboxylase Citric acid cycle a-Ketoglutarate Malate Glutamate Aspartate Asparagine Serine Glycine Cysteine malic enzyme Purines Succinyl-CoA Phenylalanine Pyrimidines Pyruvate Tyrosine Tryptophan Porphyrins heme Figure 16-16...
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?...
Mr. Q wants to know why he has developed a fatty liver. You would give him...
Mr. Q wants to know why he has developed a fatty liver. You would give him all of the following reasons except: a. The accumulation of the niacin coenzymes with their hydrogens and electrons slows down the TCA cycle so that pyruvate and acetyl CoA levels build up. b. The excess acetyl CoA is used to make fatty acids, which accumulate as fat in the liver. c. When the enzymes oxidize alcohol, they remove hydrogens and high energy electrons and...
Which of the following is an anaplerotic reaction for the citric acid cycle? O conversion of pyruvate to acetyl-CoA O conversion of glutamic acid to e-ketoglutarate O conversion of citrate to oxaloacetate and acetyl-CoA conversion of oxaloacetate to pyruvate O conversion of succinyl-Cos to heme
Stage 2: Monosaccharide Degradation to Acetyl CoA (Glycolysis + Pyruvate Conversion) Pyruvate: Aerobic and Anaerobic Conversion 1. Define what it means for a biochemical reaction to be aerobic vs. anaerobic. List what pyruvate will be converted to under each set of conditions. Conditions Definition Pyruvate Conversion Product aerobic anaerobic 2. In the space below, write the coupled reaction for the aerobic conversion of pyruvate, labeling the name of each reactant and product in the reaction. 3. Even though oxygen is...
during cellular respiration how many NADH are produced during
the conversion of pyruvate to acetyl CoA per glucose
molecule?
During cellular respiration how many NADH are produced during the conversion of pyruvate to acetyl CoA per glucose molecule? 00 ООО
8. Draw the overall coupled reaction showing the conversion of pyruvate into acetyl CoA. dono STEP 2 nach do not ww what are true. Ir raise, change one word in the statement so that it is true. a. The pyruvate produced from glycolysis must be consumed in some way or glycolysis stops. b. Glycolysis produces ATP directly. too C. Glycolysis breaks down glucose into acetyl CoA. d. Glycolysis is aerobic
4. (20 points) The reaction of pyruvate to acetyl-CoA and CO2 is the bridge reaction between glycolysis and the citric acid cycle. The carbon atoms in pyruvate are numbered and where they end up in the products are indicated CO0Θ 2 C=O + HS-CoA 3 CH3 Pyruvate S-COA 2C=O 3 CH3 Acetyl CoA Pyruvate dehydrogenase +1 CO2 a) Is C atom 1 in CO2 in a more reduced state or more oxidized state compared to its state in pyruvate? Why?...
Describe “hub” molecules acetyl CoA and pyruvate that serve
different pathways. Explain metabolic regulation favoring metabolic
pathway choices leading to and from hub molecules. Describe how
C.A.C. serves as a “hub “pathway. Use picture as a reference.
Pyruvate Glucose Fatty acids sterols pyruvate carboxylase Acetyl-CoA PEP carboxykinase Glutamine Citrate Phosphoenolpyruvate (PEP) Proline Arginine Oxaloacetate PEP carboxylase Citric acid cycle a-Ketoglutarate Malate Glutamate Aspartate Asparagine Serine Glycine Cysteine malic enzyme Purines Succinyl-CoA Phenylalanine Pyrimidines Pyruvate Tyrosine Tryptophan Porphyrins heme Figure 16-16...
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?...
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