Periplasmic flagella Periplasmic flagella is flagella of the type which is possessed by spirochetes; they are located between the protoplasmic cylinder and the
Preiplasmic space Preiplasmic space is the space between the cytoplasmic membrane and the outer membrane of Gram-negative bacteria.
Endoplasmic reticulum Endoplasmic reticulum is an extensive array of internal membranes in a eukaryotic cell.
Cytoplasmic membrane Cytoplasmic membrane is a thin layer under the cell wall consisting mainly of phospholipids and proteins, it is responsible for the selective permeability properties of the cell. Also called plasma membrane.