Question

In electron transport chain, energy for synthesis is produced when electrons pass between

• A. NADH ($H^{+}$) --> FAD
• B. Cyt b --> Cyt c
• C. Cyt a --> Cyt $a_3$
• D. All the above

Answer 1

The correct option is D All the above

The electron transport system consists of cytochromes containing cytochrome b, cytochrome c, cytochrome a, cytochrome a3, FAD and ubiquinone. All these constituents of the electron transport chain are arranged in the manner of increasing positive potential and as the electron moves from one component to another in energy synthesized in every step.

So, the correct option is 'All of the above'