Structure of Bacteria

Bacteria are ancient organisms vital to human health and the environment. They can cause diseases like cholera and tuberculosis but also play crucial roles in digestion and immunity. Bacteria are unicellular prokaryotes found in diverse habitats. They lack a true nucleus, with DNA located in the nucleoid. Bacterial cells have a flexible cell wall, flagella for movement, and pili for attachment and DNA exchange. They possess chromosomal and plasmid DNA, which carry genetic information and confer antibiotic resistance.

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