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Bacteria : Characteristics and Classification

Bacteria (singular-bacterium) are the microscopic unicellular and prokaryotic organisms. It is also known as a microbe. The term bacteria were first coined by F.J. Cohn in 1854.  Bacteria come from the Greek word manning rod. It was discovered by Antonie Von Leeuwenhoek in 1976.  It has a plant like cell-wall and autotrophic mode of nutrition. […]

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Virus : Definition, Characteristics and Classification

For proper survival of the plants and animals, they have to struggle against the environment, their different factors and other living organisms. Viruses are microscopic organisms and can be seen only under electron microscope.In nature, any living organism is affected by virus, then it will take a serious turn. Viruses are mysterious biological agents which […]

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