Question

Explain the role of oxygen and F₀ -F₁ complex in ETS.

Answer 1

Oxygen is final electron acceptor in ETS and then goes to bind with two hydrogen atoms to produce water as a byproduct.
The ETS i.e. the enzymes are sequentially laid in the FO F1 particles in the cristae of the mitochondria. Thus they serve as the site of ATP synthesis.