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Question

the electron flow from complex I to complex III is through

A
Cytochrome
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B
Ubiquinone
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C
Complex II
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D
Complex IV
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Solution

The correct option is B Ubiquinone
In the electron transport chain, electrons are transfered from complex I throught IV before reducing oxygen to water.
Coupled to the electron transfer is the movement of protons, which helps create a electrochemical gradient that drives the process of ATP synthesis.
Ubiquninone is a small lipid souble molecule that helps in the transfer of electrons from complex I and complex II to complex III.

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