3813-002Day4.Posted - many types do not grow under those...

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1 Day 4 Mon 8/29/11 topics • Pasteur, Koch, et al. , medical mbio • Delft School, ecological mbio • Microbial cells, classification, structure,… Louis Pasteur • Did not win the Nobel Prize. Why? Timing Louis Pasteur (1822-1895) Alfred Nobel (1833-1896) Nobel Prizes began after Nobel’s death F 1.22 Winogradsky Column [O 2 ] . h ν F 1.22 Winogradsky Column Oxygenic photosynth ( H 2 O ) Anaerobic photosynth S o ; S -2 SO 4 -2 ---> S -2 Organic matter
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2 Winogradsky Enrichment Cult. Enrichment Medium: NH 4 Cl, other mineral salts, silica gel solidifying agent for plates Could any microorganisms grow on these plates? Winogradsky Enrichment Cult. Enrichment Medium: NH 4 + (NH 3 ) ---> NO 3 - (energy source; e - ; ) CO 2 ---> HCHO (input: e - [H + + e - ]; energy) (HCHO, avg oxidation state of C in cell) M. Beijerinck • Enrichment Culture – Azotobacter sp. grows w/out NH 3 (1900) • Natural selection in test tube for microbes which grow under certain conditions whereas
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Unformatted text preview: many types do not grow under those conditions • Viruses – Plant viruses, 1900, filterable particles, causative agents of disease (TMV) Delft School • Van Leeuwenhoek • Beijerinck • Kluyver, van Niel, Winogradsky • Microbial Ecology • Many OU Microbiology Faculty trace scientific lineages back to van Niel, therefore to Beijerinck and the Delft School – E.g. McInerney, Tanner, Krumholz, Stephenson, Karr, Nagle,…. 3 10 What does life look like? • Is there life on Mars or other planets (moons)? • How will we recognize it? – organization – metabolism – reproduction – motion • H 2 O (s) found on Mars Deep Sea Hydrothermal Vent Community H 2 S + O 2 + CO 2--> H 2 SO 4 + H 2 O + Bact cells “Bact cells + worm--> more worm” What is a: Prokaryote Eukaryote...
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3813-002Day4.Posted - many types do not grow under those...

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