ISCI 1A24 Study Guide - Final Guide: Endoplasmic Reticulum, Sulfate-Reducing Microorganisms, Inverse Agonist

• School: McMaster University
• Department: Integrated Science
• Course: ISCI 1A24
• Professor: Carolyn Eyles

Document Summary

Inside rocks or pores between grains endoliths. High salt halophiles ph: 4 to 8. Pathways not limited to same environmental constraints as eukaryotes. Hydrogen oxidation: h2 + 1/2 o2 h2o. Sulfur oxidation: s + 3/2 o2 so3. Methanogenesis: 4h2 + co2 ch4 + 2h2o. Extreme environments determine metabolic pathways adopted by extremophiles. Biogeochemical cycle movement of matter through a system; connects earth"s various spheres in a closed system ; all matter cycles; rate is influenced by temperature, wind patterns, glaciation events, and human activities. Main cycles include water, carbon, oxygen, nitrogen, phosphorus, and sulfur. Elements required for life are relatively stable, their distribution varies over the globe, and elements are sequestered and released by organics. 97% of earth"s water is found in oceans, 3% is freshwater, 0. 75% ice. More precipitation falls on land than evaporates or transpires (40,000 km3/y) Excess precipitation leaves as surface or subsurface runoff. Less precipitation falls on ocean than evaporates (40,000 km3/y)