EESC 1146 Study Guide - Extremophile, Outgassing, Phanerozoic

• School: Boston College
• Department: Earth & Environmental Sciences
• Course: EESC 1146
• Professor: All

Document Summary

Oparin(cid:224) 2 assumptions: heterotrophy before autotrophy, heterotrophy require an external food source in order to live as an organism, autotrophy organisms who make their own food, doesn"t require an external food source(cid:224) plants, algae, some bacteria, make their own food out of chemicals and nonliving stuff, photosynthesis co2+h20(cid:224)chl+light(cid:224) c9h20)+o2 (glucose c6, opposite process is respiration, balance between heterotrophs and autotrophs in the world, early earth was reducing(cid:224) little or no oxygen (o2) in the early earth, oxidizing o2 scale; battle between o2 and h2. Chemical world to biological component biological evolution then go to more diversity life=low atomic weight compounds atoms without a lot of protons or neutrons in their nuclei larger atomic weight=much more charged nucleus low atomic weight so molecules can react photosynthesis= co2+h20= glucose and o2 respiration= glucose+o2= co2 and h20. 03/11/2014 erosion clay (clast) particles in sun gravity suspension ions in solution.