Where is the electron transport chain located in bacterial cells and mammalian cells?
a. cell membrane for both bacteria and mammalian cells
b. bacteria do not have an electron transport chain, while it is in the mitochondrium of mammalian cells
c. cytoplasm for bacteria and mitochondrium for mammalian cells mitochondrium for both bacteria and mammalian cells
d. cell membrane for bacteria and mitochondrium for mammalian cells
