01:119:101 Lecture Notes - Lecture 5: Heredity, Cyanobacteria, Abiogenesis

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:101
• Professor: Professor Beal

Document Summary

Origin of life: chemical evolution = from nonliving to living, the earth is 4. 6 billion years" old, fossil evidence of microorganisms = 3. 5 bya. Hypothesis = if life developed from non-living matter. 4 requirements for abiotic synthesis to have occurred conditions of early earth b1. O breaks bonds (oxidases) so o2 not conducive to building b1. b. b1. c. Oxidation is losing an e- and reduction is gaining e- (oilrig) Source of energy = to build biological molecules b2. a. Energy to form bonds could come from violent weather, the sun, meteorites, radiation. Atmosphere contained co2, h2o vapor and co etc. b2. b3. b4. Time = for molecules to react with one another b4. a. b4. b. How could have life started: pre-biotic soup. Hypothesis = life formed near earth"s surface and conditions of early earth occurred spontaneously a. i. 1. a. i. Formed amino acids and other organic molecules a. i. 2. Hypothesis = life formed at cracks of the ocean floor (hydrothermal vents) a. i. 2. b.