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Download Biology 11 17.3 Domains and Kingdoms Grouping Species The
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Transcript
Biology11 17.3DomainsandKingdoms GroupingSpecies § Thebroadestcategoryintheclassificationusedbymostbiologistsisthedomain. § Themostwidelyusedbiologicalclassificationsystemhassixkingdomsandthree domains. § ThethreedomainsareBacteria,Archaea,andEukarya. § ThesixkingdomsareBacteria,Archaea,Protists,Fungi,Plantae,andAnimalia. DomainBacteria § Eubacteriaareprokaryoteswhosecellwallscontainpeptidoglycan. § Eubacteriaareadiversegroupthatcansurviveinmanydifferentenvironments. DomainArchaea § Archaeaarethoughttobemoreancientthanbacteriaandyetmorecloselyrelatedto oureukaryoteancestors. § Archaeaarediverseinshapeandnutritionrequirements. § Theyarecalledextremophilesbecausetheycanliveinextremeenvironments. DomainEukarya § AlleukaryotesareclassifiedinDomainEukarya. § DomainEukaryacontainsKingdomProtista,KingdomFungi,KingdomPlantae,and KingdomAnimalia. KingdomProtista § Protistsareeukaryoticorganismsthatcanbeunicellular,colonial,ormulticellular. § Protistsareclassifiedintothreedifferentgroups—plantlike,animal-like,andfunguslike. KingdomFungi § Afungusisaunicellularormulticellulareukaryotethatabsorbsnutrientsfromorganic materialsinitsenvironment. § MemberofKingdomFungiareheterotrophic,lackmotility,andhavecellwalls. KingdomPlantae § MembersofKingdomPlantaeformthebaseofallterrestrialhabitats. § Allplantsaremulticellularandhavecellwallscomposedofcellulose. § Mostplantsareautotrophs,butsomeareheterotrophic. KingdomAnimalia § Allanimalsareheterotrophic,multicellulareukaryotes. § Animalorgansoftenareorganizedintocomplexorgansystems. § Theyliveinthewater,onland,andintheair. Biology11 Viruses—AnException § Avirusisanucleicacidsurroundedbyaproteincoat. § Virusesdonotpossesscells,noraretheycells,andarenotconsideredtobeliving. § Becausetheyarenonliving,theyusuallyarenotplacedinthebiologicalclassification system.
