3 Water and Life 3

3 Water and Life 3 - light Complex organic...

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Water, Life, and the Earliest Organisms
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Ammonium Carbon Dioxide Hydrogen Helium Water Vapor Early Organisms and Conditions on Earth What’s missing? Oxygen
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The Earliest Organisms Anaerobic live in low-oxygen environments or in the absence of oxygen. Autotrophic Self-feeding. Cannot consume other organisms for energy.
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Two Types of Autotrophs Photoautotroph Use light energy to assemble complex carbon compounds (organic) from simpler carbon-containing molecules (CO 2 ) Chemoautotroph Use energy from chemical reactions to assemble complex carbon compounds (organic) from simpler carbon-containing molecules
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Photoautotroph A photoautotroph is an organism that assembles complex organic compounds from simple carbon-containing molecules using energy from
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Unformatted text preview: light . Complex organic compounds (initially sugars C 6 H 12 O 6 ) Simple carbon molecule: CO 2 Photo = light Plants Photosynthetic Bacteria Photosynthetic Algae Chemoautotroph A chemoautotroph is an organism that produces complex organic compounds from simple carbon-containing molecules using energy from chemical reactions Energy from Chemical Reactions Zinc/manganese Sulfur/potassium nitrate The Earliest Organisms: Chemoautotrophs A chemoautotroph is an organism that produces complex organic compounds from simple carbon-containing molecules using energy from chemical reactions simple inorganic molecule CO 2 Iron Sulfur Chemical Reactants (energy) complex organic compounds...
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This note was uploaded on 02/10/2011 for the course SWS 2007 taught by Professor bonczek during the Fall '09 term at University of Florida.

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3 Water and Life 3 - light Complex organic...

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