W10_103_7c_life1

W10_103_7c_life1 - Tardigrade Life A Short Summary Slime...

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Life A Short Summary Slime Mold Tardigrade Major Steps in the Precambrian Evolution of Life 1. Origin of Life (4.0-3.5 Gyrs) 2. Photosynthesis (3.8 - 3.2 Gyrs) 3. Aerobic (Oxygen-based) Respiration (3.0-2.5 Gyrs) 4. Eukaryotes / Endosymbiosis (2.1-1.6 Gyrs) 5. Sex / Death (1.2 - 1 Gyrs) 6. Multicellular Life (1,000 - 800 Myrs) 7. Skeletons & Shells (600 Myrs) * All dates are approximate
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What is Life? What is Life? “the organic phenomenon that distinguishes living organisms from nonliving ones “A force which demonstrates a purposeful intentionality to feed, process matter into energy, grow, and reproduce .” “The condition that distinguishes animals and plants from inorganic objects and dead organisms, being manifested by growth through metabolism, reproduction and the power of adaptation to environment through changes originating internally” “Living things are systems that tend to respond to changes in their environment , and inside themselves, in such a way as to promote their own continuation .”
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What is Life? • Composed of organic compounds
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This note was uploaded on 01/11/2012 for the course GEO 103 taught by Professor Robviens during the Winter '10 term at Bellevue College.

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W10_103_7c_life1 - Tardigrade Life A Short Summary Slime...

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