Origins_Lecture - Living things Characteristics Beginnings...

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Unformatted text preview: Living things Characteristics Beginnings Prokaryotes Eukaryotes Classification Present-day species Past species Inheritance, variation, and selection Theory of Evolution Modes and rates Commonalities All Life is One Chapter 12: Origin of Life Next lecture: Chapter 13 Living Things: Characteristics 1. metabolism (energy transfer) 2. cell membrane (boundary) 3. reproduce and transfer DNA to offspring Composition Structure Minerals Living Things inorganic, Si, O, Al, Mg, Fe, Ca simple, ordered arrangements of atoms organic, C, H, O, N, P, S long chains of and complex arrangements of atoms http://evolution.berkeley.edu DNA (deoxyribonucleic acid) : large molecule containing information about the function/activity of a cell; information is transmitted to the next generation. Living Things: Characteristics http://ghr.nlm.nih.gov/handbook/howgeneswork/makingprotein Organic Molecules: From space? The Murchison meteorite Amino acid simulate Earths atmosphere H 2 O, CH 4 , NH 3 , H 2 generate simple organic molecules Miller and Ureys Experiment Organic Molecules: from Earth? (Figure 12-1) CO 2 , CO, N 2 ? after (http://www.ucmp.berkeley.edu/precambrian/precambrian.html) millions of years ago Earliest fossils (prokaryotes) Primitive Life 1. Life is old. Prokaryotes bacteria http://www.ucmp.berkeley.edu/bacteria/cyanointro.html Living Things: Prokaryotes and Eukaryotes single-celled no nucleus no organelles www.calm.wa.gov.au/national_parks/hamelin_pool_mnr.htmlwww....
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This note was uploaded on 09/14/2009 for the course GEO 401 taught by Professor Lassiter during the Spring '08 term at University of Texas at Austin.

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Origins_Lecture - Living things Characteristics Beginnings...

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