Question

Non-cytochrome members of respiratory electron transport chain are

• A. FAD, $NA{D}^{+}$ and CoQ
• B. FMN, FeS and CoQ
• C. FAD, FeS and CoQ
• D. NAD${}^{+}$, FMN and CoQ

Answer 1

Answer: (B)

FMN, FeS and CoQ

The cytochromes are a group of heme-containing electron transport enzymes that are essential for the oxidative metabolism necessary to generate adenosine triphosphate (ATP) and which do not have heme group are non-cytochrome members such as FMN (Flavin Mononucleotide), Fe-S (Iron sulphur), Coenzyme $Q10$ (ubiquinone, ubiquinol, and semiquinone) is lipid rather than protein.