[MICR 2420] - Midterm Exam Guide - Ultimate 11 pages long Study Guide!

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Biogeochemical cycling: a pathway by which a chemical substance moves through both the biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) components of earth. Microorganism: a microscopic organism, especially a bacterium, virus, or fungus. Universal tree of life: the tree of life or universal tree of life is a metaphor used to describe the relationships between organisms, both living and extinct, as described in a famous passage in charles. Biofilm: a community of microbes growing on a solid surface. Robert koch: as the founder of modern bacteriology, he is known for his role in identifying the specific causative agents of tuberculosis, cholera, and anthrax and for giving experimental support for the concept of infectious disease. Carl woese: woese is famous for defining the archaea (a new domain or kingdom of life) in 1977 by phylogenetic taxonomy of 16s ribosomal rna, a technique pioneered by woese which revolutionized the discipline of microbiology.