This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Flavoproteins are component of which complex of respiratory chain: \nSelect and explain. \nA. Complex I, B. Complex II, C. Both of the above, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Flavoproteins are impoant components of Complexes I and II. The oxidized flavin nucleotide (FMN or FAD) can be reduced in reactions involving the transfer of two electrons (to form FMNH2 or FADH2), but they can also accept one electron to form the semiquinone. Ref: Harper 28th edition, chapter 13.', 'role': 'assistant'}]