Video: Dab tsi yog cov pov thawj rau txoj kev xav ntawm endosymbiosis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov pov thawj qhia tias cov chloroplast organelles kuj yog ib zaug cov kab mob dawb nyob. Cov endosymbiotic Cov xwm txheej uas tsim mitochondria yuav tsum tau tshwm sim thaum ntxov hauv keeb kwm ntawm eukaryotes, vim tias txhua tus eukaryotes muaj lawv.
Ib yam li ntawd, koj tuaj yeem nug, cov pov thawj dab tsi txhawb txoj kev xav ntawm endosymbiosis?
Thawj daim ntawm pov thawj uas yuav tsum tau nrhiav kev txhawb nqa tus endosymbiotic Qhov kev xav yog seb puas los yog tsis yog mitochondria thiab chloroplasts muaj lawv tus kheej DNA thiab yog tias cov DNA no zoo ib yam li cov kab mob DNA. Qhov no tom qab tau ua pov thawj tias muaj tseeb rau DNA, RNA, ribosomes, chlorophyll (rau chloroplasts), thiab protein synthesis.
Tsis tas li ntawd, muaj pov thawj dab tsi los txhawb qhov Endosymbiotic keeb kwm ntawm eukaryotic hlwb? Mitochondria thiab chloroplasts DNA, RNA, ribosomes, chlorophyll (rau chloroplasts), thiab protein synthesis zoo ib yam li cov kab mob. Qhov no muab thawj qhov tseem ceeb pov thawj rau cov endosymbiotic kev xav.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi pov thawj txhawb txoj kev xav tias mitochondria thiab chloroplasts originated li prokaryotic hlwb?
Mitochondria thiab chloroplasts ntseeg tau tias tau tsim los ntawm cov kab mob symbiotic, tshwj xeeb tshaj yog alpha-proteobacteria thiab cyanobacteria, feem. Cov kev xav hais tias a prokaryotic cell tau noj los yog engulfed los ntawm ib tug loj cell . Los ntawm qee qhov laj thawj tsis paub, lub prokaryotic organelle tsis tau noj.
Qhov kev tshawb xav endosymbiosis piav qhia li cas?
Cov endosymbiosis txoj kev xav piav qhia txog yuav ua li cas cov hlwb eukaryotic tau hloov zuj zus los ntawm cov hlwb prokaryotic. Symbiosis yog kev sib raug zoo ntawm ob yam kab mob sib txawv. Peb pom tias, dhau sijhawm, ib lub xovtooj qub qub tau los ua tus tswv tsev rau lwm lub hlwb thaum ub uas muaj peev xwm ua haujlwm tshwj xeeb.
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