Binomial Nomenclature
Rules for Naming Organisms All names must be approved by International Naming Congresses (International Zoological Congress) This prevents duplicated names
Organizing Organisms There is a hierarchy of groups (taxa) from most general to most specific Domain, Kingdom, Phylum*, Class, Order, Family, Genus, species, subspecies *Division is used instead of Phylum when talking about plants
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Domains Broadest, most generalized group Three domains 1. Archaea and 2. Eubacteria are unicellular prokaryotes (no nucleus or membrane-bound organelles) 3. Eukarya are more complex and have a nucleus and membrane-bound organelles (eukaryotic cells)
Domain Archaea Domain Archaea has one Kingdom: Archeabacteria Archeabacteria live in harsh environments and may represent the first cells to have evolved. Sewage treatment plants, thermal vents, etc.
Domain Eubacteria Domain Eubacteria has one Kingdom:Bacteria, some of which cause human diseases, are present in almost all habitats on earth. Many bacteria are important environmentally and commercially.
Domain Eukarya Domain Eukarya is the largest domain It is split into 4 Kingdoms: Kingdom Protista Kingdom Fungi Kingdom Plantae Kingdom Animalia
Kingdom:Protista Most are unicellular Some are multicellular Some are autotrophic, while others are heterotrophic
Kingdom: Fungi Multicellular, except yeast Absorptive heterotrophs (digest food outside their body & then absorb it)