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LIFE SCIENCE - Bryan High School.ppt
文檔介紹:
anisms,efrompre-existingcells,andthatthereareavarietyofcelltypes.Explainthatlivingcells:a.posedofasmallnumberofkeychemicalelements(C,H,O,N,P,andS);b.arethebasicunitofstructureandfunctionofalllivingthings;efrompre-existingcellsafterlifeoriginated;andd.parethestructure,function,ells(e.g.nucleus,chromosome,mitochondria,cellmembrane,cellwall,chloroplast,cilia,flagella)ells.eonlyfromothercells.TheoldtheorywascalledspontaneousgenerationandwasdisprovedbyRedi.CelltheorybeganwiththeinventionofthemicroscopebyvanLeeuwenhoekinthe1600s.Hookecalledthe“buildingblocksoflivingthings”cells.elltypes:prokaryotesandeukaryotesthatcontainmembrane-anelles.Virusesarenotlivingandhaveonlynucleicacidsinaprotein“coat.”Theycanonlyreproduceinsidealivingcell.ellshavethese: a.nucleus–directsallcellfunctions b.nucleolus–makesribosomes c.cellwall–foundonlyinplantcells,holdcelltogether d.ribosomes–makeproteinsfollowingDNAdirections e.cytoplasm–cleargelinsidethecell f.endoplasmicreticulum–siteofcellularchemicalreactions h.Golgiapparatus–sortsandholdsproteinsuntilneeded i.vacuoles–temporarystorageofmaterials j.lysosomes–containdigestiveenzymes k.mitochondria–transformenergyforthecell l.chloroplasts–capturelightenergyandconverttochemical m.centrioles–helpwithcelldivision n.ciliaand/orflagella–helpcellmove,ifthereatallPicturesofCellTypesAllcellsfallintooneofthetwomajorclassificationsofprokaryotesandeukaryotes.Prokaryoteswereherefirstandforbillionsofyearsweretheonlyformoflife.anizedandappearedlater.TherearesomeofbothonEarthtoday.Explainthecharacteristicsoflifeasindicatedbycellularprocessesanddescribetheprocessofcelldivisionanddevelopment.Explainthecharacteristicsoflifeasindicatedbycellularprocessesincluding:a.homeostasis;b.energytransfersandtransformations;c.transportationofmolecules;d.disposalofwastes;ande.synthesisofnewmolecules.Summarizethegeneralprocessesofcelldivisionanddifferentiation,plexmulti-anizedarrangementsofdifferentiatedcells.CellularProcessesTherearemanycellularprocesses.Wewillfocuson: a.hom 內容來自淘豆網彩票怎样判断冷热号 www.ecfrr.com轉載請標明出處.