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The Main Themes of Microbiology

2. ?microbiology". The study of a wide and diverse group of microscopic organisms that are parasitic, saprophytic (saprobic) or free-living and that exist as solitary, colonial (cell clusters) or multicellular forms.The study of ?microbes"? but what is a microbe, a germ, a bug???The study of organ

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The Main Themes of Microbiology

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    1. The Main Themes of Microbiology Chapter 1

    2. 2 “microbiology” The study of a wide and diverse group of microscopic organisms that are parasitic, saprophytic (saprobic) or free-living and that exist as solitary, colonial (cell clusters) or multicellular forms. The study of “microbes”… but what is a microbe, a germ, a bug??? The study of organisms too small to be clearly seen by the unaided eye. This generally includes bacteria, (viruses?), archaea, protozoa, algae, fungi and even helminthic worms! Define the different microbial “lifestyles”: parasite, host, saprobe, free-living, solitary, colonial and multicellular

    3. 3 Scope of Microbiology Sub-disciplines: Immunology Response to infection, hypersensitivity, allergies Public health microbiology & epidemiology CDC & WHO monitor and control spread of disease Food, dairy and aquatic microbiology Microbes in food and water Agricultural microbiology Microbes and crops, improving yields Biotechnology Humans use metabolism of living things to get desired product Genetic engineering & DNA technology Mass-produce human hormones or drugs

    4. The Impact of Microbes on Earth Microbes have been on the earth for billions of years The most “ubiquitous” of all life forms (although some, you will learn, are “fastidious”) Many are “beneficial”; some are “harmful”; most are “indifferent”; all fill critically important biological environmental niches. Think of, and list, some harmful and beneficial effects of microbes! 4

    5. 5 Bacteria appeared approximately 3.5 billion years ago.

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