FADH₂ is oxidized by

1.	Complex I	2.	Complex II
3.	Complex III	4.	Complex IV

(1) Ubiquinol

(2) It is oxidized with the transfer of electrones to cytochrome C via cytochrome bc1 complex

(3) Is a mobile carrier

(4) Both A and B

(1) NADH dehydrogenase

(2) Succinate dehydrogenase

(3) Cytochrome C oxidase

(4) Cytochrome bc1 complex

(1) Mobile carrier

(2) Present on outer surface of inner membrane

(3) Acts as mobile carrier for transfer of electrones between complex III and IV

(4) Transfers electrones from complex II to complex III as well

(1) One ATP

(2) Two ATPs

(3) Three ATPs

(4) Four ATPs

(1) FMN

(2) Fe-S centres

(3) NADH dehydrogenase

(4) Cytochrome C1

(1) FAD

(2) Fe-S centres

(3) Succinate Dehydrogenase

(4) Cytochrome C1

(1) Cytochrome b

(2) Cytochrome C

(3) Copper centres

(4) Cytochrome a3

(1) Complex I

(2) Complex II

(3) Complex III

(4) Complex IV

(1) Complex I

(2) Complex II

(3) Complex III

(4) Complex IV