Most bacteria structures are made up of the envelope and its associated structures the cytosol and the nucleoid. The single circular double stranded chromosome is the bacterial genome. The cell wall plasmid cytoplasm and flagella are clearly marked in the diagram.
A prokaryote is a cellular organism that lacks an envelope enclosed nucleus.
The bacterial cell reveals three layers i capsule glycocalyx ii cell wall and iii cytoplasm figure 1 9 capsule glycocalyx some bacteria are surrounded by a gelatinous substance which is composed of polysaccharides or polypeptide or both. The cytosol together with the nucleoid also called the nuclear body forms the inner core of the general structure of bacteria cells. The word prokaryote comes from the greek πρό pro before and κάρυον karyon nut or kernel. Although they are notorious for their role in causing human diseases from tooth decay to the black plague there are beneficial species that are essential to good health.
