A lipid-soluble benzoquinone with a long isoprenoid side chain is?
(a) Ubiquinone
(b) Cytochrome b
(c) Cytochrome c
(d) Cytochrome a
The question was posed to me in an interview.
The origin of the question is Electron-Transfer reactions in Mitochondria topic in section Oxidative Phosphorylation and Photophosphorylation of Biochemistry