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What is the significance of the pyruvate to lactate during fermentation?
Wiki User
∙ 14y ago
it has to deal with the Krebs cycle or i mixed it up with Calvin cycle...
Wiki User
∙ 12y ago
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What two processes in glucose breakdown are anaerobic?
During glucose breakdown, glycolysis and fermentation occur anaerobically. Glycolysis breaks a glucose molecule into energy and pyruvate. Fermentation uses to the pyruvate to form either ethanol or lactate.
Does fermentation releases lactic acid?
Your muscle cells do when you preform lactic acid fermentation.
Which type of fermentation sometimes occurs in humans?
lactic acid fermentation takes place in the humanbeings during strenous exercise during which pyruvic acid is converted into lactic acid and further lactic acid (during cori cycle) will be converted back to pyruvate when cells get enough oxygen after the exercise.
Why does lactate accumulate in the blood during bursts of very vigorous exercise?
Lactate accumulates because of the lack of available oxygen in the muscles. In anaerobic conditions, the pyruvate produced by glycolysis is reduced to lactate via lactate dehydrogenase (while also oxidizing a single molecule of NADH to regenerate NAD+). NAD+ is a very important molecule and must readily be available in the cytoplasm in order for glycolysis to proceed.
Which metabolic pathway is common to both cellular respiration and fermentation?
The glycolytic pathway is common to both fermentation and cellular respiration. During the course of the metabolic pathway, glucose is broken down to pyruvate. In the presence of oxygen, the pyruvate molecule becomes involved in the TCA cycle. In the absence of oxygen however, fermentation occures. The process is brought about by an enzyme called alcohol dehydrogenase.
What is the main purpose of reduction of pyruvate to lactate during fermentation?
The main purpose of pyruvate reduction to lactate during fermentation is to convert NADH to NAD plus. Early in the glycolysis process, you'll see that there's a step where NAD plus gets reduced to NADH, and then an ATP is produced.
What two processes in glucose breakdown are anaerobic?
During glucose breakdown, glycolysis and fermentation occur anaerobically. Glycolysis breaks a glucose molecule into energy and pyruvate. Fermentation uses to the pyruvate to form either ethanol or lactate.
What is the name enzymes that catalyzes the formation of lactate during lactate fermentation?
lactate dehydrogenase
What are the products of lactate fermentation and alcoholic fermentation?
Both alcohol and lactate fermentation enable cells to produce ATP without using oxygen; they are the anaerobic (lacking in oxygen) alternative to cellular respiration. This is because they are extensions of glycolysis that can generate ATP solely by substrate-level phosphorylation, specifically by regenerating NAD+ by transferring electrons from NADH to pyruvate or pyruvate derivatives. NAD+ can then be reused in glycolysis to oxidize sugar. Remember that glycolysis uses two net molecules of ATP by substrate-level phosphorylation.Lactate fermentation, also known as lactic acid fermentation, occurs when NADH reduces pyruvate directly to form lactate as an end product, hence the name "lactate fermentation." More specifically, if one glucose molecule goes through glycolysis, 2 net ATP and 2 pyruvate molecules are produced and 2 NAD+ molecules are consumed. 2 NADH molecules and 2 H+ come and reduce the 2 pyruvate molecules, forming 2 lactate molecules and 2 NAD+. The 2 NAD+ molecules are then reused in glycolysis, enabling the cell to produce ATP even in the absence of oxygen. Lactate fermentation is used by some fungi and bacteria as well as in the dairy industry to produce yogurt in cheese. Another fun fact about lactate fermentation is that human muscle cells use lactate fermentation to make ATP when oxygen is scarce, such as during strenuous exercise. The resulting accumulation of lactate is partly what causes the muscle fatigue and pain that can result from exercise. But don't worry, the blood carries away the lactate to the liver where the lactate is converted back to pyruvate.Alcohol fermentation occurs when pyruvate is first converted to acetaldehyde, a 2-carbon compound, through the release of carbon dioxide from the pyruvate. Then, NADH reduces the acetaldehyde to ethanol. A more detailed look shows us that just like lactate fermentation, glycolysis produces 2 ATP and 2 pyruvate from one glucose molecule. However, unlike lactate fermentation, each pyruvate molecule releases a carbon dioxide, resulting in 2 carbon dioxide molecules and 2 acetaldehyde molecules (acetaldehyde = pyruvate - carbon dioxide). Then, similar to lactate fermentation 2 NADH and 2 H+ reduce the 2 acetaldehyde molecules, forming 2 ethanol molecules and 2 NAD+ and regenerating the supply of NAD+ needed to continue glycolysis. Alcohol fermentation is often used in bacteria in anaerobic conditions as well as in yeast. Interestingly, the carbon dioxide that is released in alcohol fermentation generated by a baker's yeast is what allows the bread to rise!
During lactic acid fermentation, what is the final electron acceptor?
Pyruvate
The main purpose of reduction of pyruvate to lactate during fermentation is to?
Alcoholic fermentation occurs in organisms such as yeast, as produces ethyl alcohol. Lactic acid fermentation occurs in animals such as humans and produces lactic acid instead of alcohol.
How many molecules of ATP does fermentation yield?
During glycolysis it makes a net amount of 2 molecules of ATP. Fermentation happens anaerobically (without oxygen) and the reduction of pyruvate into lactate itself does not yield any ATP. But I think the answer you are looking for is 2 ATP.
Does fermentation releases lactic acid?
Your muscle cells do when you preform lactic acid fermentation.
Fermentation in muscle cells produces?
Fermentation in muscle cells produces lactic acid. This happens when you have overworked your muscles, which can happen during exercise.
During which fermentation is a kind of acid converted into another acid without using oxygen?
lactic acid into a neutral lactate
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.
Which type of fermentation sometimes occurs in humans?
lactic acid fermentation takes place in the humanbeings during strenous exercise during which pyruvic acid is converted into lactic acid and further lactic acid (during cori cycle) will be converted back to pyruvate when cells get enough oxygen after the exercise.
