NOT THE SAME AS EVOLUTION First life 36 Billion years ago First life was likely simple Bacterialike Singlecelled no organelles Early Earth Early Earth had NO OXYGEN Atmosphere had CO2 Carbon monoxide nitrogen water hydrogen ID: 744762
Download Presentation The PPT/PDF document "Abiogenesis Abiogenesis – creation of ..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
AbiogenesisSlide2
Abiogenesis – creation of life from non-living molecules
NOT THE SAME AS EVOLUTIONSlide3
First life
3.6 Billion years ago
First life was likely simple
Bacteria-like
Single-celled, no organellesSlide4Slide5
Early Earth
Early Earth had
NO OXYGEN
Atmosphere had CO2, Carbon monoxide, nitrogen, water, hydrogenSlide6
Banded-iron formations show that oxygen didn’t always exist on EarthSlide7
Miller-Urey
Stanley Miller and Harold Urey
Tested whether or not organic molecules could arise naturally on early EarthSlide8Slide9
Steps of Miller-Urey
1) Boil water (turn into vapor)
2) Run an electric spark through the vapor + gases found on early Earth
3) Examine created moleculesSlide10
Results: Amino acids were created
Demonstrates that organic molecules (amino acids) can be created by chemical processes