01:119:115 Lecture Notes - Lecture 4: Protocell, Fokker E.Ii, Alexander Oparin
27 Sep 2016
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The origin of life: chemical evolution, 1st life developed from org. molecules a. i. Formed spontaneously: process from chemicals to life, fossil evidence of life c. i. c. ii. 3. 5 bya how we know that chem evo. happened c. ii. 1. States: 1st microorganisms were born in 3. 5 bya: hypothesis: abiogenesis hypothesis (how it happened) d. i. d. ii. Abiotic synthesis: d. ii. 1. d. ii. 2. sth. w/o life idea that there was a spontaneous formation of small organic molecules d. iii. Organic macromolecules d. iii. 1. came from 2 small inorganic molecules forming together d. iii. 1. a. Ex: proteins(amino acids & result of coding) and na (dna and rna)(code everything) d. iv. Protocells d. iv. 1. first cells were droplets within an enclosing. Allowed for maintenance of separate internal environment that was different from surroundings d. v. Origin of self-replicating molecules d. v. 1. d. v. 2. d. v. 3. needed for life to happen happens in living organisms. Establishment of heritance: four requirements e. i. Only 2 bonds at most could form (valence of 2 e-) e. i. 2.
