Lecture 05

Lecture 05 - Lecture 5 Bacteria and Archaea Protists BBOM...

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1 Lecture 5 Read About Microscopy Protists BBOM 12e Sec. 2.5-2.11, 4.1-4.2, 18.6 Bacteria and Archaea Review Macromolecules: Structure and function Read: BBOM 12e Chapter 3 BBOM 12e Sec. 2.1 – 2.4 Bacteria and Archaea (Prokaryotic Microorganisms) BBOM 12e Fig.2.17
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2 Size Range of Bacteria and Archaea Smallest ~ 0.1-0.2 um Largest Known ~500-600 um Mostly Single Cells ~0.5-10.0 um Small Size: 0.5-10.0 um High S/V, capable of very rapid growth and high rates of metabolic activity. Absorptive and phototrophic nutrition No nuclear envelope (Instead a nucleoid contains genetic material, DNA) Broad range of metabolic diversity Usually dominate in extreme habitats Major agents of geochemical change Genetic streamlining and plasticity =>Rapid adaptation to environmental change (evolution) Properties of Bacteria and Archaea BBOM 12e Sec. 2.5, 2.9-2.10, 4.1-4.2 Ubiquitous free-living cells A few cause diseases of animals and plants (Rods, Cocci, Curved, Spirals, Budding cells…) Also Filaments, Chains, and Aggregates ( Symbionts, Parasites & Pathogens)
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3 Protists (Eukaryotic Microorganisms) Protists Size Range of Protists Smallest known ~ 0.8 um Largest ~ 200+ um Mostly single cells ~5-150 um
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This note was uploaded on 10/25/2009 for the course BIO 2900 taught by Professor Ghiorse during the Fall '07 term at Cornell.

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Lecture 05 - Lecture 5 Bacteria and Archaea Protists BBOM...

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