2BiodiversityThe variety of organisms considered at all levels from populations to ecosystems
3Taxonomy – science of describing, naming, and classifying organisms Taxon – particular group within a taxonomic system
4Criteria for classification Cellular structure prokaryote vs. eukaryoteMethods of obtaining nutrients autotroph vs. heterotrophMetabolism aerobic vs. anaerobicComparative anatomy homologous structuresEmbryologic development similar development stagesBiochemistry protein structures, base sequencing of the nucleic acids, and types of nucleic acids
5Carolus Linnaeus – created original system of classification in the mid 1700s Domain, kingdom, phylum, class, order, family, genus, speciesDo kings play chess on fuzzy green stools?
6Scientific Name - Binomial nomenclature: two-part name 1) Genus (capitilized, italicized)2) species (lowercase, italicized)same in all countries, unlike common nameLatinEx: scientific name - Panthera tigriscommon name – tiger
7THREE DOMAINS 1) Bacteria – small, single celled prokaryotic organisms 2) Archaea – prokaryotes. Distinctive cell membranes. Some are autotrophic, or can use chemosythesis to produce food.3) Eukarya – large, true nucleus, complex cellular organelles. Includes plants, animals, fungi, and some single-celled organisms