Protist DiagramSupplemental InstructionIowa State UniversityLeader: Breanna KingCourse: BIOL 211 (3)Instructor: Dr. ColbertDate: 9/9/10Ways in which protists are important:-----Features of Protists--o How is this different from the same feature on prokaryotes?Major means of obtaining nutrition:- Ingestive (animal-like)- protozoa- Absorptive (fungi-like)- Photosynthetic (plant-like)-algaeMajorCladeImportant SubgroupsDefining CharacteristicsExamples from Lecture(diseases caused, symbioses, etc.)ParabasalidsSupergroup:EXCAVATANone givenUnicellularEach cell has 4 flagella (all are motile)Modified mitochondria called HYDROGENOSOMESTrichomonasTrichCommon sexually transmitted diseaseEuglenozoaSupergroup:EXCAVATA1.KINETOPLASTID2.EUGLENIDS1 large mitochondrianper cellKinetoplast= unique organized mass of DNA inside mitochondriaEuglenaGenus Trypanosoma causes African Sleeping Sickness-tsetse fly is the vectorAlveolataSupergroup:CHROMALVEOLATAAll members of thisclade have: smallmembrane-boundedcavities under cellmembrane1.Dinoflagellates2.CiliatesElaborate cellulose cell walls, 2 flagellaMarine & freshwater, 50% photosyntheticUse cilia to move and feedVery complex cells that contain one micronucleus & one macronucleusRed Tide: Dinoflagellate population explosions, water stained brownish-redToxins: Produced by the dinoflagellates can kill fish, inverts, and seabirds. They canalso accumulate in shellfish and cause poisoning in humansSupplemental Instruction1060 Hixson-Lied Student Success Center v 294-6624 v www.si.iastate.eduProtistmatrixStramenophiles All members of thisclade have:Hair-likeprojections on oneof their (typically)two flagella1. Oomycetes2. Diatoms3. Brown algae 4. Golden algae Cell walls of hydrated silicaImportant photosynthetic organism in planktonFound in freshwater/marine environmentsDiatomaceous earth used in:-filtering medium-metal polishes-reflective paint-pesticide-nanotechnologyRed AlgaeSupergroup:ArchaeplastidaN/AFlagella? _NEVER_Accessory pigments: AllowPhotosynthesis at great depths-as deep as 260 m, effective at absorbing blue lightMost are multicellular, most are heterotrophicHuman uses:-carageenan-agar-sushi!Green AlgaeSupergroup:ArchaeplastidaN/ACell walls with high % of _cellulose__Species: Volvox (colonial green algae)Sea lettuceLife Cycles:Isogamous: gametes are the same sizeAnisogamous: Gametes are not the same sizeWhich is green algae?May be eitherOedogonium life cycle:Anisogamous; meiosis leads toproduction of zoospores; mitosis produces gametes; mitosis also produces asexual “macrozoospores”ForamsSupergroup:RHIZARIA1. Forams2. Chlorarachnio…3. RadiolariansCharacterized by the presence of thread-like pseudopodia2 different nutritional methods: chemoheterotrophs, symbiosisFossils are used by:1.) Oil industry-indicators of oil in rock strata2.) Scientists: ancient global climateSupergroup UnikontaAmoebozoansSlime-molds: characterized by plasmodium (coenocytic mass)-one big cell with many nucleiCan produce resistant spores through meiosisGymnamoebasUnicellular, heterotrophs that often consume prokaryotes and other protists as foodMove by producing pseudopodia (false
View Full Document
![BIOL_211__4__Boury_hartnett_Boury_Biol_211_Final_Review[1]](https://media.gradebuddy.com/documents/2807977/0918f742-1a3d-4d7a-ac26-f706ee3c7b63.png)
![BIOL_211__2__Hofmockel_aubriemj_worksheet7[1]](https://media.gradebuddy.com/documents/1581085/79dccfce-ae29-486d-997a-ff3be9cef4a6.png)
Unlocking...