Qhov kev sim Miller thiab Urey tau ua pov thawj li cas?
Qhov kev sim Miller thiab Urey tau ua pov thawj li cas?

Video: Qhov kev sim Miller thiab Urey tau ua pov thawj li cas?

Video: Qhov kev sim Miller thiab Urey tau ua pov thawj li cas?
Video: Qhov Kev Tshwm Sim Muaj Tseeb Ntawm Tej Khub Me Nyuam. 2024, Kaum ib hlis
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Cov Miller Urey Kev sim . Hauv xyoo 1950, biochemists Stanley Miller thiab Harold Urey , ua ib kev sim uas pom tau tias ntau cov organic tebchaw tuaj yeem tsim tau los ntawm kev simulating cov xwm txheej ntawm lub ntiaj teb thaum ntxov.

Raws li txoj cai, dab tsi yog qhov tseem ceeb ntawm kev sim Miller Urey?

Lub hom phiaj yog sim lub tswv yim uas lub complex molecules ntawm lub neej (nyob rau hauv cov ntaub ntawv no, amino acids) yuav tshwm sim nyob rau hauv peb lub ntiaj chaw hluas los ntawm tej yam yooj yim, tej yam ntuj tso tshuaj tiv thaiv. Cov kev sim yog ib qho kev vam meej hauv uas amino acids, lub tsev blocks ntawm lub neej, tau tsim thaum lub sij hawm simulation.

Tsis tas li ntawd, dab tsi yog qhov khoom kawg ntawm Miller Urey sim? Yog li hauv paus, cov tshuaj methane-ammonia-hydrogen sib tov tau noj hauv qhov sib piv ntawm 2: 2: 1 nrog rau tag nrho cov rhuab. cov khoom thiab tau dhau los ntawm ib tug condenser uas ntawm condensation yielded aqueous cov khoom kawg . Cov cov khoom kawg muaj: amino acids, aldehydes thiab lwm yam. tag nrho cov organic tebchaw loj uas yog precursors rau lub neej.

Tsuas yog li ntawd, qhov kev tshawb pom tseem ceeb tshaj plaws ntawm Miller Urey kev sim?

Cov Miller - Urey kev sim tau tam sim ntawd lees paub tias yog ib qho tseem ceeb kev tawg ntawm kev kawm txog keeb kwm ntawm lub neej. Nws tau txais kev lees paub tias ob peb lub ntsiab lus tseem ceeb ntawm lub neej tuaj yeem raug tsim los ntawm lub ntiaj teb thaum ub nyob rau hauv cov xwm txheej uas pom los ntawm Oparin thiab Haldane.

Qhov kev xav li cas Miller Urey tau sim hauv lawv qhov kev sim?

Cov Miller - Urey kev sim muab thawj cov pov thawj tias cov organic molecules xav tau rau lub neej tuaj yeem tsim los ntawm cov khoom siv tsis zoo. Qee cov kws tshawb fawb txhawb RNA ntiaj teb kev xav , uas qhia tias thawj lub neej yog tus kheej-replicating RNA.

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