Video: Qhov twg evolved thawj prokaryotes los yog eukaryotes?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Fossil cov ntaub ntawv qhia tias eukaryotes evolved los ntawm prokaryotes qhov chaw ntawm 1.5 txog 2 billion xyoo dhau los. Ob txoj kev npaj piav qhia txog kev ntxeem tau ntawm prokaryotes cell los ntawm ob me me prokaryotes hlwb.
Yog li ntawd, leej twg tuaj thawj prokaryotes lossis eukaryotes?
Cov ua ntej , lub neej yooj yim tshaj plaws yog prokaryotes - kab mob, xws li cov kab mob, uas tsis muaj ib tug nucleus. Prokaryotes tau muaj nyob hauv ntiaj teb txij li tsawg kawg 3.8 billion xyoo dhau los. Eukaryotes yog cov kab mob uas muaj cov nucleus. Cov pov thawj qub tshaj plaws ntawm eukaryotes yog los ntawm 2.7 billion xyoo dhau los.
Tsis tas li ntawd, vim li cas prokaryotes yog thawj lub hlwb hauv ntiaj teb? Prokaryotes yog tus ua ntej daim ntawv ntawm lub neej nyob rau ntiaj teb , uas twb muaj lawm rau billions xyoo ua ntej cov nroj tsuag thiab tsiaj tshwm sim. Cov ntiaj teb thiab nws lub hli tau xav tias muaj txog 4.54 billion xyoo. Cov ua ntej kab mob tau prokaryotes uas tuaj yeem tiv taus cov xwm txheej hnyav no.
Ib sab saum toj no, thaum twg prokaryotes thiab eukaryotes tshwm sim thawj zaug?
Qhov qub tshaj plaws paub fossilized prokaryotes ua tso tseg kwv yees li 3.5 billion xyoo dhau los, tsuas yog kwv yees li 1 billion xyoo tom qab tsim lub ntiaj teb pob zeb. Eukaryotes nkaus xwb tshwm nyob rau hauv cov ntaub ntawv fossil tom qab, thiab tej zaum yuav tau tsim los ntawm endosymbiosis ntawm ntau yam prokaryotes cov yawg koob.
Puas yog mitochondria hloov zuj zus los ntawm cov hlwb prokaryotic?
Mitochondria thiab chloroplasts yuav muaj hloov zuj zus los ntawm engulfed prokaryotes uas ib zaug ua neej nyob ywj pheej. Eukaryotic hlwb muaj mitochondria Tom qab ntawd engulfed photosynthetic prokaryotes , qho hloov zuj zus los ua tshwj xeeb chloroplast organelles.
Pom zoo:
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