Earth Sciences 1086F/G Lecture Notes - Cambrian Explosion, Stanley Miller, Gliese 581
22 Apr 2014
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All organisms made of cells: nucleic acid, protein, dna holds information, rna holds instructions from dna, genetic code. Carbon creatures: all earth life carbon based. Evolution: species evolve by natural selection. Merciless to individual, gives species best chance for survival: new dna made by mutations to create mutants, the key to diverse life on our planet. Murchison meteorite: had organic compounds and amino acids. Meteorite in antarctica showed bacteria but not really evidence of life from mars. This experiment did not create life, just made amino acids. Single celled multicellular bones and shit. Made amino acids, proteins, in hot springs: prokaryotic cells. Made oxygen, but was poisonous to them paradox hur: oxygen in ocean bound to iron rich ocean, eukaryotes. Cambrian period (cambrian explosion) change in climate and life. Need to find liquid water: transports nutrient and waste for organisms, nope. Moon = airless, mercury = airless, venus = hot. Inner solar system is too hot: maybe.
