Dab tsi molecules tau ua thaum Miller thiab Urey sim?
Dab tsi molecules tau ua thaum Miller thiab Urey sim?

Video: Dab tsi molecules tau ua thaum Miller thiab Urey sim?

Video: Dab tsi molecules tau ua thaum Miller thiab Urey sim?
Video: Tuag ua dab mam rov los tsim 11/7/2018 2024, Kaum ib hlis
Anonim

Cov huab cua thaum ntxov muaj cov pa roj xws li ammonia , methane , dej vapor , thiab carbon dioxide . Cov kws tshawb fawb xav tias qhov no tsim "kua zaub" ntawm cov organic molecules los ntawm cov tshuaj inorganic. Xyoo 1953, cov kws tshawb fawb Stanley Miller thiab Harold Urey tau siv lawv cov kev xav los sim qhov kev xav no.

Yog li ntawd, dab tsi yog tsim nyob rau hauv Miller Urey sim?

Miller , nrog rau nws cov npoj yaig Harold Urey , tau siv lub tshuab hluav taws xob los ua kom muaj cua daj cua dub ntawm lub ntiaj teb thaum ntxov. Lawv sim ua ib tug brown broth nplua nuj nyob rau hauv amino acids, lub tsev blocks ntawm cov proteins.

Tsis tas li ntawd, dab tsi yog qhov tseem ceeb tshaj plaws ntawm kev sim Miller Urey? 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 tau pom los ntawm Oparin thiab Haldane.

Tib neeg kuj nug, dab tsi yog cov khoom kawg ntawm Miller Urey sim?

Yog li qhov yooj yim, cov 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 loj organic tebchaw uas yog precursors rau lub neej.

Vim li cas Miller thiab Urey ua lawv qhov kev sim?

Stanley Miller simulated tej yam kev mob xav tias muaj nyob rau hauv lub ancient ntiaj teb no. Lub hom phiaj yog los soj ntsuam lub tswv yim hais tias 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 Miller - Kev sim Urey (Cov ntawv tseeb los ntawm 1953):

Pom zoo: