Video: Qhov kev sim Miller thiab Urey tau ua pov thawj li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
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.
Pom zoo:
Koj ua pov thawj li cas cov kab yog sib npaug hauv cov ntawv pov thawj?
Thawj yog yog tias cov ces kaum sib thooj, cov ces kaum uas nyob rau tib lub ces kaum ntawm txhua qhov kev sib tshuam, sib npaug, ces cov kab sib npaug. Qhov thib ob yog yog tias qhov sib txawv sab hauv lub kaum sab xis, cov ces kaum uas nyob rau sab nraud ntawm lub transversal thiab sab hauv cov kab sib npaug, sib npaug, ces cov kab sib npaug
Stanley Miller qhov kev sim ua pov thawj dab tsi?
Xyoo 1953, tus kws tshawb fawb Stanley Miller tau ua ib qho kev sim uas yuav piav qhia txog qhov tshwm sim ntawm lub ntiaj teb qub qub billions xyoo dhau los. Nws xa hluav taws xob los ntawm lub hwj ntawm cov tshuaj tov tshuaj methane, ammonia, hydrogen thiab dej. Qhov no tsim cov organic tebchaw nrog rau cov amino acids
Vim li cas nws tseem ceeb uas yuav tsum rov ua qhov kev sim thiab sim cov kev xav hauv ntau txoj kev?
Nws yog ib qho tseem ceeb rau cov kws tshawb fawb kom rov sim dua thaum ua qhov kev sim vim tias qhov kev txiav txim siab yuav tsum raug lees paub. Muaj tseeb vim tias cov txiaj ntsig ntawm txhua qhov kev xeem yuav tsum zoo sib xws. Lwm cov kws tshawb fawb yuav tsum tuaj yeem rov ua koj qhov kev sim thiab tau txais cov txiaj ntsig zoo sib xws. Tib txoj hauv kev los ntsuas qhov kev xav yog ua qhov kev sim
Qhov twg ntawm 1905 cov ntaub ntawv tau muab thawj qhov pov thawj zoo rau lub neej ntawm atom?
Annus mirabilis cov ntaub ntawv
Qhov kev sim Miller Urey ua pov thawj li cas?
Nyob rau xyoo 1950, biochemists Stanley Miller thiab Harold Urey, tau ua ib qho 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. Electrodes tau xa cov hluav taws xob tam sim no, simulating xob laim, mus rau hauv lub chamber uas muaj roj