Gram negative bacteria wall are thin and contain higher percentage of lipid. Gram positive bacteria wall are also thin but do not contain lipid.
Cellular structure of bacteria consist of cell envelop made up of cell wall and cell membrane . some bacteria has also third layer called capsule . The motile form of bacteria contain flagella. Gram negative bacteria also contain hair like called pilli.
The cell envelop encloses protoplasm which is differentiated
into central coiling of chromosome called nucleoid and outer called cytoplasm containing mesosome , fat granules and ribosomes.
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