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Contributions to Micro

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Question
Answer
Size of average virus   100 nm  
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Size of Coccus, Rickettsia, and Bacillus   1 micrometer  
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Size of flagellum   10 nm  
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Most bacteria are sized between   1-10 micrometers  
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Zacharias Janssen   Built 1st compd microscope  
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Robert Hooke   First termed cells  
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van Leeuwenhoek   discovered microbes with a single lens contraption that had 300x  
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Edward Jenner   Vaccination in 1796- milkmaid pox  
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Semmelweis   Mathernal morbidity and morgue work link- 1850  
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John Snow   Linked water pumps to cholera outbreak- 1853-4  
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Pasteur   Disproved spontaneous generation using long necked flasks; proposed germ theory (human disease arises from infection of germs); rabies vaccine, silkworm disease and many others  
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Robert Koch   Verified germ theory; Koch's postulates are still used to day in iding diseases-discovered 20+ diseases from 1875-1900; Culture methods, TB and cholera as well as many others  
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