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InterviewSolution
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Explain electron transport system in brief |
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Answer» Ncert padho sab diya hua h \tThe metabolic pathway through which the electron passes from one carrier to another, is called the electron transport system (ETS).\tElectron transport system takes place in inner mitochondrial membrane.\tElectron transport chain comprises of the following:\tComplex I: NADH dehydrogenase\tComplex II: succinate dehydrogenase\tComplex III: cytochromes bc1\tComplex IV: cytochromes a-a3\tComplex V: ATP synthase\tNADH2 is oxidized by NADH dehydrogenase and electrons are then transferred to ubiquinone located in the inner mitochondrial membrane.\tFADH2 is oxidized by succinate dehydrogenase and transferred electrons to ubiquinone.\tThe reduced ubiquinone is then oxidized with transfer of electrons via cytochromes bc1 complex to cytochrome c.\tCytochrome c is a small protein attached to the outer surface of the inner membrane and transfer electrons from complex III to complex IV.\tWhen electrons transferred from one carrier to another via complex I to complex IV, they are coupled to ATP synthesis of ATP from ADP and Pi.\tOxygen plays a vital role in removing electrons and hydrogen ion and finally helps in the production of H2 |
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