BIOA01H3 Chapter Notes - Chapter 3: Heterotroph, Homeostasis, Stromatolite
22 Oct 2017
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BIOA01H3 Full Course Notes
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Properties of life: life forms should exhibit these properties. Emergent properties: example: moving school of fish is an emergent property of individual decisions. Looking for food while minimizing getting hurt be a predator: where did life come from, early earth (4. 6 bil ago) contained inorganic molecules (water, h2), but no oxygen and no organic molecules that are required for life. Synthesis of polymers: macromolecules are required for life, so monomers had to be converted into polymers, clay, catalyzed the polymerizations of these simple molecules because monomers adhered to clay (ex. Nucleotides to nucleic acids: accelerated the formation of lipid vesicles, lipids are like cell membranes as they form bilayer spheres and. Origin of life selective membranes: rna evolved before dna through polymerization, ribozymes are rna that act as a catalyst to do rna replication (ceck scientist, this replication allowed the evolution of dna, lipid bilayers containing organic molecules arose. Panspermia hypothesis: life actually came from space.
