Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Origins of Life - My George School
Document related concepts
Transcript
The Origins of Life By: Adam Fofana and Daniel Mark Terms to Know Abiogenesis: Life arising from nonliving matter Organic compound: Compound containing Carbon Amino Acid: Amine (NH2 + Carboxylic Acid (COOH) + Side chain Time Frame? Life is estimated to have developed ~3.8 billion years ago Earliest undisputed fossils are roughly 1.8 billion years old Requirements for the Formation of Life Simple organic molecules Molecules developing into self-replicating polymers Membranes to contain distinct internal chemistries Energy Miller/Urey Experiment Conducted in 1953 Investigating the theory that organic compounds formed spontaneously 15 different amino acids initially discovered, more than 20 found in 2007 Sutherland Experiment Conducted in 2009 John Sutherland (at the University of Cambridge) managed to produce 2 of RNA’s nucleotides (cytosine and uracil) using acetylene and formaldehyde Plausible route to RNA formation RNA is key because is catalyzes many reactions and can self-replicate Panspermia Life (or building blocks of life) developed in space, arrived on earth via meteors or interstellar dust Intense meteorite bombardment of Earth occurred ~4 billion years ago… Hydrothermal Vents Deep in the ocean, vents exist, which spill up assorted chemicals Unusual conditions exist within and around these vents Conclusions Image Sources https://upload.wikimedia.org/wikipedia/commons/7/79/Geological_time_spiral.p ng https://upload.wikimedia.org/wikipedia/commons/thumb/5/54/MillerUrey_experiment-en.svg/1000px-Miller-Urey_experiment-en.svg.png http://www.mbari.org/news/homepage/2012/auv-mapping/black-smoker-600.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/4/48/Panspermie.svg/ 800px-Panspermie.svg.png http://www.pbs.org/wgbh/nova/evolution/origins-life.html https://www2.mrc-lmb.cam.ac.uk/wordpress/wpcontent/uploads/John_Sutherland-150x105.jpg http://images.tutorvista.com/content/origin-life/simple-organic-moleculesformation.jpeg Information Sources IB Biology Study Guide https://en.wikipedia.org/wiki/Amino_acid https://en.wikipedia.org/wiki/Abiogenesis https://en.wikipedia.org/wiki/Organic_compound https://en.wikipedia.org/wiki/Panspermia http://www.pbs.org/wgbh/nova/evolution/origins-life.html http://www.sciencechannel.com/tv-shows/greatest-discoveries/videos/100greatest-discoveries-origin-of-life/ http://news.sciencemag.org/biology/2015/03/researchers-may-have-solvedorigin-life-conundrum
