Microbiology

Viruses

Viruses Virus is a small infectious agent that causes various diseases. The study of viruses is called virology. Word virus means poison. These are small minute non cellular bodies that are considered as living as well as non-living or placed at a borderline between living and non-living.

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Types, Structure and Shapes of Bacteria

Bacteria Word bacteria (singular bacterium) means small rod because the first bacteria were rod shaped. Bacteria are the smallest unicellular prokaryotic organisms (Organisms that lack true nucleus and membrane bounded organelles) that cannot be seen with naked eye but can be seen only with the help of microscope. Bacteria were discovered by a Dutch scientist …

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