BISC 110 Lecture Notes - Lecture 3: Hydrogen Sulfide, J. B. S. Haldane, Homeostasis
16 Dec 2012
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Document Summary
Lecture 3- the origin of life on earth. Life: metabolism, nutrient uptake, nutrient processing, waste elimination, generative processes, growth and reproduction (replication, responsive processes, immediate response to environment, individual adaption, population evolution, control processes, coordination, regulation, product, structural organization, cellular level, organismal level. Ideas change as scientific evidence accumulates: sun revolves around earth, earth is flat. Timeline of earth: big bang: 15 bya (billion years ago, earth formed: 4. 7 bya, stable crust of the earth: 3. 9 bya, life on earth: 3. 6-3. 7 bya. Recipe for life: energy source + raw materials + suitable environment. Rna world in the dna world: rna served as a template for assembling dna nucleotides, dna is a more stable genetic molecule. Note: meaning of these greek and latin words: proto: first (protocells, a: absence (abiotic, meros: part, poly: many (polymer- bonded units of compounds); mono: one (monomer-molecule that can form to make polymers)
