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The citric acid cycle, more commonly known as the Krebs cycle.
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∙ 13y ago
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What happens to pyruvate molecules formed glycolysis in the absence of oxygen?
they will enter the Krebs cycle
Does tca cycle generate water?
Yes, two molecules of H2O are produced from one pyruvate through the TCA cycle.
Where does the produced pyruvate go in the second stage of cellular respiration?
Pyruvate enters mitochondria for further stages of cellular respiration such as Kreb's cycle and ETC.
How does many ATP produced from 2 moles of pyruvate in Krebs cycle?
2 moles of pyruvate produce 2 ATP, 6 reduced NAD, 2 reduced FAD
What is the fate of pyruvate in mitochondrial respiration?
Pyruvate is formed from glucose during glycolysis. Should the conditions be aerobic, pyruvate will be converted into Acetyl Coenzyme A (CoA) with the help of an enzyme called "pyruvate dehydrogenase." Bi-products of this reaction include CO2 and NADH This occurs in the matrix of the mitochondria. Acetyl CoA will then continue into the Krebs cycle/citric acid cycle. After this, the products of the cycle (NADH and FADH2) will be involved in oxidative phosphorylation and the electron transport chain where large amounts of ATP will be produced. This occurs in the inner layer of the mitochondria. Should there be anaerobic conditions, then animals can convert pyruvate into lactate. Or, in plants; pyruvate is converted into ethanal and then into ethanol in a process called fermentation.
Is Pyruvate is a product of glycolysis?
Yes. Pyruvate is a product of glycolysis. This molecule contains three carbons. For every molecule of glucose that enters the glycolytic pathway, two molecules of pyruvate are formed
What stage of cellular respiration produces pyruvate as a product?
Pyruvate is produced at the end of glycoysis and converted into Acetyl CoA and then used in tricarboxylic acid (aka Kreb's, citric acid) cycle to ultimately more ATP.
What is the significance of the pyruvate to lactate during fermentation?
it has to deal with the Krebs cycle or i mixed it up with Calvin cycle...
What is the substance that enters the Krebs cycle from glycolysis?
In Glycolysis, the final compound formed is Pyruvate. Now, pyruvate has to be transformed to Acetyl-CoA by the substitution of the carboxylic group with a Coenzyme A by pyruvate dehydrogenase. In real terms, Acetyl-CoA is the molecule that "switch on" the Krebs cycle.
How many ATP are produced by pyruvate?
When pyruvate is formed, approximately twelve molecules of ATP, also known as adenosine triphosphate, are produced. This is only true if pyruvate is the starting point.
How does the pyruvate produced by glycolysis enter the mitochondrion?
Pyruvate enters the Krebs cycle via an intermediate called acetyl CoA.Pyruvate is formed in the cytoplasm as the end product of glycolysis. Pyruvate enters a mitochondrion, in the matrix of which it encounters the enzyme pyruvate dehydrogenase. This enzyme catalyzes the reaction of pyruvate with coenzyme A to form acetyl CoA. This reaction is sometimes called the link reaction, as it links glycolysis to the Krebs cycle (= citric acid cycle, or tricarboxylic acid cycle)."Pyruvate dehydrogenase" is in fact a huge complex (bigger than a ribosome) consisting of three enzymes and a number of other substances, including coenzymes. In the course of the reaction NAD+ is reduced to NADH. A molecule of CO2 is also produced. So this reaction involves a both an oxidation and a decarboxylation.Acetyl CoA then reacts with oxaloacetate to form citrate. Both oxaloacetate and citrate are intermediates of the Krebs cycle.
Where is Pyruvate is formed?
glycolysis
