2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Qhov kev sim Miller-Urey muab thawj cov pov thawj tias cov organic molecules xav tau rau lub neej tuaj yeem tsim los ntawm cov khoom tsis zoo. Qee cov kws tshawb fawb txhawb RNA lub ntiaj teb kev xav, uas qhia tias thawj lub neej yog tus kheej-replicating RNA. … Tej yam yooj yim cov organic tebchaw tej zaum yuav tau los rau lub ntiaj teb thaum ntxov ntawm meteorites.
Miller qhov kev sim yog dab tsi thiab nws qhov tseem ceeb yog dab tsi?
Kev sim Miller-Urey yog thawj zaug sim tshawb fawb txog tswv yim txog keeb kwm ntawm lub neej. Lub hom phiaj yog los soj ntsuam lub tswv yim hais tias cov complex molecules ntawm lub neej (nyob rau hauv cov ntaub ntawv no, cov amino acids) yuav tshwm sim nyob rau hauv peb cov hluas ntiaj chaw los ntawm tej yam yooj yim, tej yam ntuj tso tshuaj tiv thaiv.
Dab tsi yog qhov tseem ceeb tshaj plaws ntawm qhov kev sim Miller-Urey?
Qhov kev sim Miller-Urey tau lees paub tam sim ntawd tias yog qhov tseem ceeb hauv kev tshawb fawb 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.
Vim li cas Miller qhov kev sim sim tseem ceeb?
Ib qho kev sim ua xyoo 1952 rau sim ua pov thawj tias cov xwm txheej uas muaj nyob rau hauv lub ntiaj teb qub qub muaj peev xwm ua rau cov organic tebchaw. … Qhov no ua pov thawj tias qhov kev xav ntawm lub ntiaj teb tuaj yeem ua rau cov organic tebchaw thiab thaum kawg muslife.
Qhov txiaj ntsig ntawm Miller-Urey sim ua li cas?
Qhov kev sim Miller-Urey muab thawj qhov pov thawj tias cov organic molecules xav tau rau lub neej tuaj yeem tsim los ntawm cov khoom tsis zoo. Qee cov kws tshawb fawb txhawb RNA lub ntiaj teb kev xav, uas qhia tias thawj lub neej yog tus kheej-replicating RNA.
Pom zoo:
Vim li cas txoj kev tseem ceeb tseem ceeb rau kev tswj xyuas qhov project?
txoj kev tseem ceeb tso cai rau pab pawg txheeb xyuas cov haujlwm tseem ceeb tshaj plaws hauv qhov project. … Qhov no muab kev nkag siab ntau dua rau koj qhov project ncua sij hawm thiab kev sib raug zoo ntawm cov haujlwm, ua rau koj nkag siab ntau ntxiv txog lub sijhawm ua haujlwm twg koj tuaj yeem hloov kho, thiab qhov twg yuav tsum nyob ib yam.
Dab tsi yog qhov tseem ceeb thiab vim li cas nws tseem ceeb los txheeb xyuas koj qhov tseem ceeb?
Qhov tseem ceeb yuav coj koj hauv kev txiav txim siab hauv lub neej thiab ua rau koj taug qab. Qhov tseem ceeb tshaj plaws, qhov tseem ceeb tshaj plaws yuav ua rau koj ntseeg siab hais tias "tsis yog." Lawv pab koj txheeb xyuas qhov xav tau tiag tiag hauv koj lub neej, piv rau lwm tus xav tias tseem ceeb.
Qhov kev tshwm sim hauv lub neej tseem ceeb ntawm kev ntsuas kev ntsuas kev sib raug zoo twg muaj tus lej ntau tshaj?
Qhov kev tshwm sim ntawm qib siab tshaj yog tuag ntawm tus txij nkawm(nrog tus nqi nruab nrab ntawm 100), txheeb ze rau kev sib yuav, nrog tus nqi nruab nrab ntawm 50, thiab, piv txwv, kev tuag ntawm tus phooj ywg ze, uas tau qhab nia 37. Qhov xwm txheej tseem ceeb ntawm lub neej ntawm Kev Hloov Kho Kev Ntsuas Kev Ntsuas Qhov Ntsuas puas muaj cov lej hloov pauv lub neej ntau tshaj?
Vim li cas qhov tseem ceeb ntawm qhov muaj zog thiab qhov tsis muaj zog yog qhov tseem ceeb?
Nws yog ib qho tseem ceeb rau qhov tseem ceeb ntawm qhov ua tau zoo thiab qhov tsis muaj zog vim qhov no pab lub tuam txhab txiav txim siab txog thaj chaw uas lawv yuav tsum tau txhim kho ntxiv rau thaj chaw uas lawv ua tau zoo hauv. Vim li cas lub zog thiab qhov tsis muaj zog tseem ceeb?
Vim li cas qhov kev sim catalase tseem ceeb rau kev sib txawv ntawm staphylococci los ntawm streptococci?
Kev kuaj catalase yog ib qho tseem ceeb tshwj xeeb uas siv los txiav txim seb Gram + cocci yog ib qho staphylococci lossis streptococci. Catalase yog ib qho enzyme uas hloov cov hydrogen peroxide rau dej thiab cov pa oxygen. … Yog muaj npuas tshwm (vim yog tsim cov pa pa) cov kab mob no catalase zoo.
