Video: Thaum twg cov kws tshawb fawb paub tias archaea txawv ntawm cov kab mob?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov sib txawv paub txog cov yam ntxwv zoo uas cov kab mob eukaryotic sib koom, xws li nuclei, cytoskeletons, thiab cov ntaub so ntswg sab hauv. Cov zej zog kev tshawb fawb tau nkag siab qhov xav tsis thoob thaum xyoo 1970s los ntawm kev tshawb pom ntawm ib pawg tshiab ntawm cov kab mob - qhov Archaea.
Ntawm no, Archaea txawv ntawm cov kab mob li cas?
Archaea muaj cov phab ntsa ntawm tes uas tsis muaj peptidoglycan thiab muaj daim nyias nyias uas ntim cov lipids nrog hydrocarbons es tsis yog fatty acids (tsis yog bilayer). Kab mob : cell membrane muaj ester bonds; cell phab ntsa ua los ntawm peptidoglycan; tsuas muaj ib qho RNA polymerase xwb; react rau tshuaj tua kab mob hauv a txawv txoj kev tshaj archea ua.
Qhov thib ob, dab tsi tuaj thawj archaea lossis kab mob? Archaea - lub sijhawm ntawd tsuas yog cov tshuaj methanogens paub - yog ua ntej cais cais los ntawm kab mob Xyoo 1977 los ntawm Carl Woese thiab George E. Fox raws li lawv cov ribosomal RNA (rRNA) noob.
Ua raws li qhov no, yuav ua li cas Archaea thawj qhov txawv ntawm lwm cov prokaryotes?
Zoo sib xws ntawm lawv. Archaea thiab kab mob yog ob leeg prokaryotes , txhais tau tias lawv tsis ua muaj ib tug nucleus thiab tsis muaj membrane-bound organelles. Lawv yog me me, ib leeg-cell kab mob uas tsis tuaj yeem pom los ntawm qhov muag liab qab tib neeg hu ua microbes.
Thaum twg yog tus sau Archaea thawj zaug?
Peb- sau npe system yog ib qho kev faib khoom lom neeg qhia los ntawm Carl Woese et al. xyoo 1990 uas faib cov cellular life forms rau hauv archaea ua , kab mob, thiab eukaryote thaj chaw.
Pom zoo:
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