Beginning with NADH, track the flow of electrons through the ETC. A. Complex I, Complex II, Complex III, Complex IV B. Complex II, Ubiquinone, Complex III, Cytochrome C, Complex IV. C. Complex III, Ubiquinone, Complex II, Cytochrome C, Complex IV, Oxygen D. Complex I, Ubiquinone, Complex III, Cytochrome C, Complex IV, Oxygen.

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Answer:

D. Complex I, Ubiquinone, Complex III, Cytochrome C, Complex IV, Oxygen.

Explanation:

The track the flow of electrons through the ETC.

D. Complex I, Ubiquinone, Complex III, Cytochrome C, Complex IV, Oxygen.

Flow of electrons in ETC:

In the mitochondrial ETC, electrons flow when the reduced electron (NADH, FADH₂) are oxidized. In plants and other photosynthetic organisms, an ETC serves to oxidize NADPH. They travel down the electron transport chain, releasing the electrons that they once had. The end result is loads of energy, approximately 34 ATP (energy molecule).

Thus, the track of flow will be: Complex I, Ubiquinone, Complex III, Cytochrome C, Complex IV, Oxygen

Find more information about Electron transport chain here:

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