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Which Of The Following Statement(S) Is (Are) Correct?
- a)Pyruvate can be converted into ethanol and carbon dioxide by yeast, and Fermentation takes place in mitochondria.
- b)Fermentation takes place in aerobic bacteria, and Fermentation is a form of anaerobic respiration.
- c)Pyruvate can be converted into ethanol and carbon dioxide by yeast, and Fermentation is a form of anaerobic respiration.
- d)Fermentation takes place in aerobic bacteria, and Fermentation takes place in mitochondria.
Correct answer is option 'C'. Can you explain this answer?
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Which Of The Following Statement(S) Is (Are) Correct?a)Pyruvate can b...
Fermentation is a form of anaerobic respiration. Pyruvate can be converted into ethanol and CO, in yeast during fermentation. Since this process takes place in the absence of air (oxygen), it is called anaerobic respiration. It takes place in cytoplasm. Break down of pyruvate using oxygen, i.e., aerobic respiration takes place in the mitochondria.
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Which Of The Following Statement(S) Is (Are) Correct?a)Pyruvate can b...
Fermentation is a metabolic process that occurs in the absence of oxygen. It involves the breakdown of organic compounds, typically glucose, to produce energy in the form of ATP. The correct statement among the options provided is option C, which states that pyruvate can be converted into ethanol and carbon dioxide by yeast, and fermentation is a form of anaerobic respiration.
Explanation:
1. Pyruvate conversion by yeast:
During fermentation, pyruvate, the end product of glycolysis, can be converted into different substances depending on the organism. In the case of yeast, pyruvate is converted into ethanol and carbon dioxide through a process known as alcoholic fermentation. This process is utilized by yeast in the production of alcoholic beverages and bread-making.
2. Fermentation as anaerobic respiration:
Fermentation is a form of anaerobic respiration, meaning it occurs in the absence of oxygen. In the absence of oxygen, the electron transport chain, which is responsible for the final step of aerobic respiration, cannot function. Therefore, cells need an alternative way to generate ATP. Fermentation serves as this alternative pathway by utilizing substrate-level phosphorylation, which involves the direct transfer of a phosphate group to ADP to form ATP.
3. Fermentation in aerobic bacteria:
Contrary to option B, fermentation does not primarily occur in aerobic bacteria. Aerobic bacteria have the ability to undergo aerobic respiration, which is a more efficient process for generating ATP in the presence of oxygen. However, some aerobic bacteria can switch to fermentation when oxygen is limited or absent. This allows them to continue producing ATP even in unfavorable conditions.
4. Fermentation and mitochondria:
Option D is incorrect because fermentation does not take place in mitochondria. Mitochondria are the organelles responsible for aerobic respiration in eukaryotic cells. They house the electron transport chain and other enzymes involved in the complete oxidation of glucose. Fermentation, on the other hand, occurs in the cytoplasm of cells and does not involve the mitochondria.
In summary, option C is the correct statement. It correctly states that pyruvate can be converted into ethanol and carbon dioxide by yeast during fermentation, and fermentation itself is a form of anaerobic respiration.
Explanation:
1. Pyruvate conversion by yeast:
During fermentation, pyruvate, the end product of glycolysis, can be converted into different substances depending on the organism. In the case of yeast, pyruvate is converted into ethanol and carbon dioxide through a process known as alcoholic fermentation. This process is utilized by yeast in the production of alcoholic beverages and bread-making.
2. Fermentation as anaerobic respiration:
Fermentation is a form of anaerobic respiration, meaning it occurs in the absence of oxygen. In the absence of oxygen, the electron transport chain, which is responsible for the final step of aerobic respiration, cannot function. Therefore, cells need an alternative way to generate ATP. Fermentation serves as this alternative pathway by utilizing substrate-level phosphorylation, which involves the direct transfer of a phosphate group to ADP to form ATP.
3. Fermentation in aerobic bacteria:
Contrary to option B, fermentation does not primarily occur in aerobic bacteria. Aerobic bacteria have the ability to undergo aerobic respiration, which is a more efficient process for generating ATP in the presence of oxygen. However, some aerobic bacteria can switch to fermentation when oxygen is limited or absent. This allows them to continue producing ATP even in unfavorable conditions.
4. Fermentation and mitochondria:
Option D is incorrect because fermentation does not take place in mitochondria. Mitochondria are the organelles responsible for aerobic respiration in eukaryotic cells. They house the electron transport chain and other enzymes involved in the complete oxidation of glucose. Fermentation, on the other hand, occurs in the cytoplasm of cells and does not involve the mitochondria.
In summary, option C is the correct statement. It correctly states that pyruvate can be converted into ethanol and carbon dioxide by yeast during fermentation, and fermentation itself is a form of anaerobic respiration.
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Which Of The Following Statement(S) Is (Are) Correct?a)Pyruvate can be converted into ethanol and carbon dioxide by yeast, and Fermentation takes place in mitochondria.b)Fermentation takes place in aerobic bacteria, and Fermentation is a form of anaerobic respiration.c)Pyruvate can be converted into ethanol and carbon dioxide by yeast, and Fermentation is a form of anaerobic respiration.d)Fermentation takes place in aerobic bacteria, and Fermentation takes place in mitochondria.Correct answer is option 'C'. Can you explain this answer?
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