Question

The correct sequence for the flow of electrons between following components of mitochondrial electron transport chain is:
(A). NADH dehydrogenase
(B). Cytochrome \( bc_1 \) complex
(C). Ubiquinone
(D). Cytochrome C
Choose the correct answer from the options given below:

• A. (A), (B), (C), (D).
• B. (A), (C), (B), (D).
• C. (B), (A), (D), (C).
• D. (C), (B), (D), (A).

Hint:

Mnemonic: Think of the carriers as alternating between large membrane-bound complexes and small mobile shuttles:
Complex I (Stationary) \( \rightarrow \) Ubiquinone (Mobile lipid) \( \rightarrow \) Complex III (Stationary) \( \rightarrow \) Cytochrome C (Mobile protein).

Answer 1

The Correct Option is B