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The following is a scheme showing the electron transport system. Identify the electron carrier molecules indicates as $A$ and $B$ Choose the correct option.
3 $\mathrm{A}=\mathrm{FMN}, \mathrm{B}=\mathrm{Fe}-\mathrm{S}$ protein
4 $\mathrm{A}=\mathrm{Fe}-\mathrm{S}$ protein $\mathrm{B}=\mathrm{FMN}$
Explanation:
Exp:B Electron transport system is a series of protein complex and other molecule in inner mitochondrial membrane that transfer electron from electron donor to electron acceptor. Coenzyme Q (shown by A) is a lipid-soluble benzoquinone that serves as an electron carrier and transfers the electrons to cytochrome $b_{1}$ of complex III. Cytochrome C (shown by B) is a soluble protein that accepts an electron from complex III and donates them to the binuclear copper center of complex IV.
