can you help me in drawing Electron Transport System. step by step
The following information will help you in this.
Electron Transport Chain (ETS)
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NADH and FADH2 are oxidised to release the energy stored in them.
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Electrons are passed from one carrier to another, and finally to oxygen, resulting in the formation of water.
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Electrons produced by NADH in the mitochondrial matrix are oxidised by Complex I (NADH dehydrogenase).
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Electrons are then transferred to ubiquinone, located in the inner mitochondrial membrane. Ubiquinone receives reducing equivalents through Complex II (FADH2).
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Reduced ubiquinone (ubiquinol) is then oxidised by the transfer of electrons from Complex III (cytochrome bc1 complex) to cytochrome c.
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Cytochrome c transfers the electrons between Complex III and Complex IV (Cytochrome c − oxidase complex consists of cyt a and a3, along with two copper centres).
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In the course of passing from one carrier to another, electrons couple with Complex V (ATP synthase) and produce ATP.
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Oxidation of 1 NADH produces 3 ATPs.
Oxidation of 1 FADH2 produces 2 ATPs. -
Role of oxygen in the terminal stage of ETS: It acts as the final hydrogen acceptor; removes hydrogen from the process and drives the whole process