<prompt> Electron transport chain is located in-Inner mitochondrial membraneInner part of mitochondrial membraneIntermembranousMatrix  <response>: Ans. is a i.e., Inner mitochondrial membrane o As molecules, such as glucose and fatty acids, are metabolized oxidized they produce electons reducing equivalents, which are donated to coenzymes like NAD and FAD to reduce them into NADH and FADH2.o These reduced forms of coenzymes NADH, FADH2 need to be oxidized.o This is achei ved when reduced coenzymes transfer their reducing equivalent electrons to electron transport chain ETC and these reducing equivalents are transported within in the ETC, through a specialized set of electron carriers, to oxygen, i.e.. oxygen is the terminal electron acceptor.o Oxidation of reducing equivalents in the respiratory chain is coupled with phosphorylation of ADPto ATP Q,o This is the most important mechanism for capturing the energy present in various nutrients. As the respiratory chain is located in the mitochondria, the mitochondria have been described as the power house of the cells Q,o Electron transport chain is present in the inner mitochondria membrane Qo The enzymes of ETC are embedded in the inner membrane.o NADH and FADH2 serv e as substrates for ETC by donating their reducing equivalents electrons PGMECET 07 Components of respiratory chain are: - i Flavin mononucleotide , PGMECET 07 FMN; ii Ubiquinone or Coenzyme Q; iii Iron-sulfur Fe - S protein associated with FMN and cytochrome b; and iv Cytochromes haeme proteins: Cytochrome b, c1, c, a and a3 