What is the structure of bacteria?

capsule - species of bacteria have third protective covering, capsule made of polysaccharides (complex carbohydrates).

cell envelope - cell envelope made of 2 3 layers: interior cytoplasmic membrane, cell wall, , -- in species of bacteria -- outer capsule

cytoplasm - cytoplasm, or protoplasm, of bacterial cells functions cell growth, metabolism, , replication carried out. gel-like matrix composed of water, enzymes, nutrients, wastes, , gases , contains cell structures such ribosomes, chromosome, , plasmids. cell envelope encases cytoplasm , components. unlike eukaryotic (true) cells, bacteria not have membrane enclosed nucleus. chromosome, single, continuous strand of dna, localized, not contained, in region of cell called nucleoid. other cellular components scattered throughout cytoplasm.

flagella - flagella (singular, flagellum) hairlike structures provide means of locomotion bacteria have them. can found @ either or both ends of bacterium or on surface. flagella beat in propeller-like motion bacterium move toward nutrients; away toxic chemicals; or, in case of photosynthetic cyanobacteria; toward light.

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