CHEM 4150 : Exam 3 Page 1
Document Summary
~no cell nucleus or any other membrane bound organelle. ~until recently there were no known pathogens caused by archaea. Dna (g-c bonds have 3 hydrogen bonds, compared to a-t bonds that have 2, so they are more likely to stay attached at higher temperatures) ~the more acidic a biological entity is the more h-bonds it has. ~these archaea have more g-c bonds, therefore have more h-bonds. ~ many are extremophile, but not restricted to extreme environments. ~archaea accounts for 20-30% of marine microbial cells. ~ they live with bacteria and very limited eukaryotes in the ocean. ~trash goes to landfills and methane consumes the ground when buried. ~hydrogen-sulfide is produced by microorganisms in the mud in anaerobic environment. *extremophiles- organisms that can survive, replicate, and live through generations in extreme condition. Photophyla- red algae phylogeny of eukarya for most of their life cycle. ~flagella; some guide along surface crawls over surface. ~swim with flagella, extend pseudopodia, nonmotile, swim with cilia.
