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The Origin and Evolution of Microbial Life
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Stromatolites _______________________________________________________________
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Prokaryotes _______________________________________________________________
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Review of Prokaryotes Lack nucleus and other membranous organelles
Majority of DNA is a single large ring Amount of DNA transferred in reproduction varies Reproduce via binary fission Posses cell wall different from plants _______________________________________________________________
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Earliest Life _______________________________________________________________
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Bacteria & Archaea _______________________________________________________________
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Prokaryote Shapes _______________________________________________________________
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Modes of Nutrition _______________________________________________________________
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Archaea Live in Extreme Environments
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Prokaryotic Survival Structures
Cell wall Capsule Flagella Pili Endospores _______________________________________________________________
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Flagella _______________________________________________________________
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Pili _______________________________________________________________
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Endospores _______________________________________________________________
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Robert Koch _______________________________________________________________
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Koch’s Postulates _______________________________________________________________
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So, What Are We Getting At?
How might Eukaryotic life have arisen? 2 theories Infolding of Plasma membrane Endosymbiotic hypothesis _______________________________________________________________
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Membrane In-Folding Theory
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Endosymbiotic Theory _______________________________________________________________
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Protists 4 Major Groups Protozoans (first animal) Slime molds Unicellular algae Multicellular algae Earliest protists were ancestral to plants animals and fungi _______________________________________________________________
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Protozoans Amoebas Flagellates Apicomplexans Cilliates
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Amoebas _______________________________________________________________
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Flagellates _______________________________________________________________
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Apicomplexans _______________________________________________________________
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Dinoflagellates _______________________________________________________________
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Cilliates _______________________________________________________________
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Slime Molds Single and multi-cellular life stages
Thrown in with amoebas into amoebozoa Use pseudopodia 2 major types Cellular slime molds Plasmodial slime molds _______________________________________________________________
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Cellular Slime Molds - 1 _______________________________________________________________
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Cellular Slime Molds - 2 _______________________________________________________________
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Cellular Slime Molds - 3 _______________________________________________________________
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Plasmodial Slime Molds - 1
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Plasmodial Slime Molds - 2
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Plasmodial Slime Molds - 3
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Stramenopiles Group named for use of “hairy” flagellum 3 major types
Diatoms Brown algae Water molds _______________________________________________________________
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Diatoms _______________________________________________________________
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Brown Algae _______________________________________________________________
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Green Algae _______________________________________________________________
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Red Algae _______________________________________________________________
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Multicellular Green Algae
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Evolution of Multicellularity
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