Biology 1202B Chapter Notes - Chapter 3: Polycyclic Aromatic Hydrocarbon, Louis Pasteur, Allan Hills 84001
6 Feb 2013
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Asteroids (coming from mars) brining organic matter to earth proving that there could have been life on mars. Alh84001: found to be 4. 5 billion years old: same age as our solar system (earth was formed 4. 6 billion years ago)(universe was formed 15 billion years) Atoms found in living are no different then atoms in non living things (abiotic) 7 characteristics of life: display order, harness and utilize energy, reproduce respond to stimuli, exhibit homeostasis, growth and development, evolve. Lack the cellular machinery to synthesize their own proteins. Living matter cannot generate spontaneously from non-living matter: louis pasteur. Different in earlier earth; first cell arose where there had been no life. Louis pasteur proved there is no spontaneous generation but not how the first cell came alive. Cell theory: all organisms are composed of one or more cells, the cell is the smallest unit that has the properties of life, cells arose only from the forth and division of preexisting cells.
