14 239 pm archaea saline acidic hotcold environments

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Unformatted text preview: s (Archaea) Halophiles BIO1130 Organismal Biology Thermophiles Figure 20.20 Université d’Ottawa / University of Ottawa BIO1130 Organismal Biology 30 2:39 PM Page 10 Archean eon cyanobacteria able to produce oxygen: Since end of archaean age-> no change particular group critical to tap into production of oxygen -> high energy molecules by splitting molecules with sunlight extremely efficient reaction. Fossil bacteria BIO1130 Organismal Biology 31 Université d’Ottawa / University of Ottawa 2:39 PM layesrs of bacteria that is photosynthesizing, all throughout fossil record. Stromatolites © C Eeckhout Figure 3.14 BIO1130 Organismal Biology Université d’Ottawa / University of Ottawa 32 2:39 PM Cyanobacteria and earth’s evolution CO2 + H2O + light (CH2O)n+ H2O + O2 BIO1130 Organismal Biology Université d’Ottawa / University of Ottawa BIO1130 Organismal Biology 33 2:39 PM Page 11 Archean eon sediments layed down between anaerobi and aerobic period. End of archean: oxygen environment, ozone is an ultraviolet filter With...
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This note was uploaded on 01/14/2014 for the course BIO 1130 taught by Professor Fenwick during the Fall '08 term at University of Ottawa.

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