BIOL108 Lecture Notes - Lecture 28: Proteinoid, Lipid Bilayer, Liposome
3 Aug 2018
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24th of may 2018: origin of life: the prebiotic soup: The atmosphere of newly cooled earth contained a mixture of gases: water vapour, hydrogen, methane, nitrogen, ammonia and carbon dioxide: origin of biological molecules: Haldane and oparin independently suggested that the reducing atmosphere on primitive earth might allow the formation of organic molecules like those found in living organisms. Some time later, miller tested the hypothesis: miller experiment reflect prebiotic processes: 1969 a shower of meteorites contained organic compounds in similar ratios to the. Miller experiment suggesting that organic molecules are even synthesized in space: condensation reactions lead to the formation of polymers: Proteins = amino acid + amino acids = polypeptides. Polysaccharides = sugar + sugars = polysaccharides. Lipids = alcohol + fatty acids = lipids. Nucleic acids = nucleotide + nucleotides = nucleic acids: origin of cell like structures: Plausible models for the origin of cells include = liposomes, proteinoid microspheres and coacervate droplets: liposomes:
