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Question
Final acceptor of electrons in ETC is:
Final acceptor of electrons in ETC is:
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Solution
The correct option is B Oxygen
Electrons are transferred in the ascending order of redox potential or the ease with which a molecule will accept electrons. Hence, the final oxygen electron acceptor during TCA cycle is oxygen.
Electron transport system (ETS) is the metabolic pathway through which the electron passes from one carrier to another. It is located in the inner mitochondrial membrane.
The final electron acceptor during the electron transport chain in respiration is oxygen. There are two pathways in cellular respiration called glycolysis and citric acid cycle that generate ATP.
Most of the ATP generated during the catabolic breakdown of glucose is not directly from these pathways. Instead, it is derived from a process that involves moving of electrons through a series of electron transporters that undergo redox reactions: the electron transport chain(ETC/ETS).
Electron transport chain is the last stage of cellular respiration. It takes place within the molecules embedded in the mitochondrial membrane. The protons and electrons generated from the products of Krebs cycle are taken up by the first molecule of the electron transport chain. The electrons are then passed from molecule to molecule to finally let them react with oxygen and protons giving rise to water. The final reaction can not take place without oxygen and in the absence of this step ATP cannot be generated.
So, the correct answer is, ‘Oxygen.’
Electrons are transferred in the ascending order of redox potential or the ease with which a molecule will accept electrons. Hence, the final oxygen electron acceptor during TCA cycle is oxygen.
Electron transport system (ETS) is the metabolic pathway through which the electron passes from one carrier to another. It is located in the inner mitochondrial membrane.
The final electron acceptor during the electron transport chain in respiration is oxygen. There are two pathways in cellular respiration called glycolysis and citric acid cycle that generate ATP.
Most of the ATP generated during the catabolic breakdown of glucose is not directly from these pathways. Instead, it is derived from a process that involves moving of electrons through a series of electron transporters that undergo redox reactions: the electron transport chain(ETC/ETS).
Electron transport chain is the last stage of cellular respiration. It takes place within the molecules embedded in the mitochondrial membrane. The protons and electrons generated from the products of Krebs cycle are taken up by the first molecule of the electron transport chain. The electrons are then passed from molecule to molecule to finally let them react with oxygen and protons giving rise to water. The final reaction can not take place without oxygen and in the absence of this step ATP cannot be generated.
So, the correct answer is, ‘Oxygen.’
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