Read the following statements about an overview of Electron Transport System (ETS).

(I) Ubiquinone receives reducing equivalents via FADH 2 (complex-II) that is generated during oxidation of

succinate in the TCA cycle.

(II) Cytochrome- c is a small protein attached to the outer surface of the inner membrane acts as mobile carrier for transfer of electrons between complex-III and IV.

(III) Complex-IV refers to cytochrome-oxidase complex containing cytochromes- a and a 3 and two copper centres.

(IV) As the electrons moves down the system, energy is used up to form ADP from ATP.

(V) 2ATPare formed for every pairs of electrons that enters by way of NADH and 3ATPare formed for every pair of electrons that enters by way ofFADH 2 .

Choose the option containing incorrect statements.