Biology 1001A Study Guide - Midterm Guide: Base Pair, Thymine, Uracil
13 Nov 2017
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This was the atmosphere when earth was just beginning chirality: a chiral molecule is one that is not superimposable on its mirror image. Major events in the evolution of life: 4. 6 bya the earth was formed. Homosapiens the components needed for prebiotic evolution are: Water vapor the physicochemical conditions on the early earth were: a reducing atmosphere, four chemicals listed above. Modern abiotic synthesis is not possible b/c of greater amounts of oxygen making he atmosphere an oxidizing atmosphere which chiral partner is used by modern biology for sugars and amino acids: l a. a. and d sugars. Modern homochirality is true today b/c specificity is required for the enzymes to catalyze, bodies had to decide between chiral partner. abiotic polymerization could have occurred by first there only being rna. Rna then started producing primitive protein that could build more structures and catalyze more reactions. Dna could have been made b/c it is much more stable.
