Which of the following pairs of the mitochondrial electron transport system (ETS) complexes and their components is incorrectly matched?

Step-by-step solution

According to NCERT, the complexes of the mitochondrial ETS are named as follows: Complex I is NADH dehydrogenase. Complex II is Succinate dehydrogenase. Complex III is Cytochrome bc₁ complex. Complex IV is Cytochrome c oxidase complex (containing cytochromes a and a₃ , and two copper centres). Complex V is ATP synthase. Therefore, the pairing of Complex III with Cytochrome c oxidase is incorrect, as Cytochrome c oxidase is Complex IV. Answer: Complex III : Cytochrome c oxidase