BIOL 2051 : TestTwoNotes Bio
Document Summary
Chapter 24: boundaries between units in the geologic time scale are marked by dramatic biotic change. 5 kingdom classification system in use through the late 1900s: monera protista plantae fungi animalia, old way. We now use woese"s 3 domains: bacteria archaea eukarya. Linnaeus hierarchy: domain, kingdom, phylum, class, order, family, genus, species. Taxon (taxa: the named taxonomic units(s) at any level in this taxonomic hierarchy, did king philip come over for gumbo sunday, panthera=genus, pardus= specific epithet that refers to one species in the genus panthera. Linnaeus convinced us to use a hierarchical classification system. Defense against disease: the immune system (chapter 43: three lines of defense against microbial attack, innate defense, non specific external barriers, nonspecific internal defense, acquired immunity, specific immune response, 3 lines of defense, external barriers, skin. Physical barrier to microbial entry inhospitable environment for growth; dry, dead cells at surface. Sweat/sebaceous glands secreting acids and natural antibiotics like lactic acid: mucous membranes.
