Earth Sciences 1086F/G Chapter Notes - Chapter 19: Cell Nucleus, Stanley Miller, Ultraviolet
12 Apr 2019
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Evolution: modifying the life data library for living things to survive throughout generations, information stored in dna must change as the environment changes. 2: without change in dna a warming of the climate could wipe a species of planet, starving plant eaters and leaving hawks, wolves etc without prey. Life: cellular organisms that are carbon- and water-based; that contain genetic information sufficient to reproduce; that possess the abilities to undergo metabolism; that respond to stimuli, and that adapt (through natural selection) to their environment in successive generations. 1953 experiment by stanley miller and harold urey: experiment designed to see how lighting-reproduced by repeated electric discharges- might have affected the primitive earth atmosphere. 3: discharged an electric spark into mixture resembling primordial composition of the atmosphere, amino acids appeared in a receptacle designed to model an ancient ocean, amino acids are the building blocks of every cell, people were skeptical.
