BISC300 Study Guide - Final Guide: Phylogenetic Tree, Archaea, Hopanoids

• School: University of Delaware
• Department: Biological Sciences
• Course: BISC300
• Professor: Thomas Hanson

Document Summary

Acellular require assistance: viruses=virions nucleic acid and protein; smallest of microbes; requires host to replicate; cause range of diseases/cancers, viroids/virusoids rna, satellites nucleic acid enclosed in a protein shell, prions infectious proteins. Microbe biological entity too small to see with the naked eye; typically undifferentiated; simple, small; <0. 1 mm. Updated tree of life based on concatenated ribosomal protein sequences; archaea and eukarya are on same lineage; archaea don"t appear monophyletic anymore, they"re an off- shoot before eukarya. Evolution of microbes hgt: hgt scrambled signals; mutation of genetic material led to selected traits, new genes/genotypes evolved mosaic of genetic info, bacteria and archaea increase genetic pool by hgt within the same generation. Disproving spontaneous generation: idea that living organisms can develop from nonliving or decomposing matter, pasteur"s swan-neck flasks; no growth with swan neck (microbes trapped at base); neck snapped off and you get growth.