UGA BIOL 1108 - FINAL EXAM (106 pages)

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FINAL EXAM



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FINAL EXAM

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Pages:
106
School:
University of Georgia
Course:
Biol 1108 - Principles Bio Ii

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BIOL 1108 Edition 1nd Final Exam Study Guide Lectures 2 25 Lecture 2 August 22 Introduction to Prehistoric Earth Learning Objectives 1 How does abiogenesis differ from biological evolution Despite their differences how are the two concepts similar to one another 2 What was the major significance of the work of Stanley Miller Jack Szostak 3 What were some of the natural sources of biologically important molecules that were present on the early Earth before the origin of life Where did these biomolecules come from In The News Why were authorities handing out bottled water in Toledo Ohio in early August of 2014 MicrocysTIS is the algae MicrocysTIN is the toxin it produces Microcystis is a cyanobacteria algae that produces a toxin MICROCYSTIN which is contaminating the water supply in Toledo Ohio via Lake Erie Warmer temperatures and waste dumped into the lake have provided microcystis with an ideal breeding ground to bloom Microcystin causes extreme liver damage The problem with microcystin is the body does not know how to remove it Microcystin is very resilient to PH changes and temperature fluctuations as well as many enzymes in the body PREBIOTIC EARTH Abiogenesis emergence of biotic life from abiotic resources This lies in the grey area between biology and chemistry Abiogenesis formed spontaneously through millions of years of random molecule interactions chemical evolution and biological evolution occurs spontaneously through many years of spontaneous gene mutation The earth s crust floats upon a relatively fluid mantle Mantle is constantly heated by radioactive decay from core Convection currents from fluid mantle cause crust plates to shift i e Pangea modern continents Primitive Earth s Atmosphere 80 H2O VAPOR 10 CO2 10 INERT GASES N2 CO CH4 OXYGEN O2 NOT PRESENT Present Earth s Atmosphere 77 NITROGEN N2 21 OXYGEN O2 1 WATER H2O VAPOR 0 035 CARBON DIOXIDE CO2 BIGGEST CHANGE IS THE MAJOR REDUCTION OF CARBON DIOXIDE In recent years the carbon dioxide percentage



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