👉 Epiplasm is a type of cell membrane that forms the innermost layer of the plasma membrane in bacteria and other prokaryotes. It acts as an outer barrier between the cell's interior and its extracellular environment, protecting the cell from外界的 invasion and allowing for efficient transport of substances and energy across the cell membrane. Epiplasm is made up of a series of specialized proteins called lipids, which are responsible for maintaining the integrity of the plasma membrane.