Virus and Protozoa

Things to remember

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• The virus was first discovered by a German scientist Adolf Meyer in 1886 A.D. 
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• The virus is metabolically inactive outside the host cell.
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• The branch of biology that deals with the study of viruses is called virology.
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• Those viruses which infect the animals and live inside the animal cells are called animal viruses.
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• Those viruses that infect plants are called plant virus. 
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• Those viruses that infect bacterial cells are called bacteriophage virus. 
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• Protozoans are acellular or unicellular organisms. 
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• Some of the examples of disease caused by protozoa are amoebiasis, giardiasis, african sleeping sickness etc.
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• Protozoa are found in freshwater, marine and in damp soil.
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