Question

In ETS, complex I and IV are respectively

Answer 1

Electron transport system (ETS)

The metabolic pathway through which the electron passes from one carrier to another, is called the electron transport system (ETS)

The process is carried out by the four different complexes that carry electron from one to another complex. These are:-

Complex I - NADH dehydrogenase

Complex II - Succinate dehydrogenase

Complex III - Cytochrome bc${}_1$

Complex IV - Cytochrome c oxidase

Complex V - ATP Synthase

So the correct option is 'NADH dehydrogenase and cytochrome oxidase complex'.

Final answer

(c) NADH dehydrogenase and cytochrome oxidase complex