The cells are furthermore divided into Prokaryotes and Eukaryotes. The prokaryotes are mainly small cells enclosed by the plasma membrane, with a characteristic cell wall that may alter in combination depending on the specific organism. The nucleus is absent in the Prokaryotes but it consists of a circular or linear DNA. Ribosomes are present in the Prokaryotes. The protoplasm of a prokaryote is made of the chromosomal region that is revealed as fibrous deposits under the microscope, and the cytoplasm. Bacteria and Archaea are the two areas of
