Explanation

In eukaryotes, electron transport and oxidative phosphorylation occur in the inner membrane of mitochondria. The significant enzymes of inner mitochondrial membrane are enzymes of electron transport pathways viz. NAD, FAD, DPN (diphosphopyridine nucleotide) dehydrogenase, five cytochromes (cytochrome-b, cytochrome-c, cytochrome-$c_{1}$, cytochromes-a and cytochrome-$a_{3}$), ubiquinone or coenzyme-$Q_{10}$, non-haem copper and iron, ATP synthetase, succinate fatty acid acyl transferase.