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TABLE 3 - antibiotics and in genetic engineering...

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TABLE 3 A Synopsis of the Organisms Usually Studied in Introductory Plant Biology Name Distinctive Features History and Phylogeny Other Significant Features Eubacteria (Bacteria): true bacteria, cyanobacteria, spirochetes, purple and green bacteria, pathogens Prokaryotes; the most metabolically diverse— organisms: autotrophs (photosynthetic and chemosynthetic), hetertophs; anaerobes, and aerobes The most abundant, smallest, and oldest organisms; present 2 billion years before eukaryotes appeared; modified the environment and made possible eukaryotic life Recycle organic matter; fix atmospheric nitrogen; significant cause of diseases; used in industry to make cheese, alcohol,
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Unformatted text preview: antibiotics, and in genetic engineering Archaebacteria: extremophiles, methanogens, halophiles, thermophiles Prokaryotes of extreme environments, i.e. very: hot, cold, acid, salty; structurally different from eubacteria and more closely related to the eukaryotes; appeared later than eubacteria The endosymbiosis theory suggests some prokaryotes were engulfed by others and lived symbiotically within them; over time, these became the organelles of eukaryote cells Extremophiles responsible for: natural gas reserves, colors in hot-springs, salt flats; live in hydrothermal vents on the ocean floor in high pressures and temperatures...
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