In mitochondria, cristae act as sites for (a) protein synthesis (b) phosphorylation of flavoproteins (c) breakdown of macromolecules (d) oxidationreduction reaction.
Option D Respiratory chain is located in the inner membrane (cristae) of mitochondria. It consists of a series of proteins containing oxidationreduction groups. Chemical treatment of the mitochondrial membrane results in the isolation of five complexes which have been designated as complexes I, II, III, IV and V.
