Cov txheej txheem:
- Tus txheej txheem ntawm noob caj noob ces yog dab tsi?
- gene splicing ua haujlwm li cas thiab qhov tshwm sim ntawm tus txheej txheem yog dab tsi?
- Yuav ua li cas thaum sib tw?
- Kev sib txuas ua haujlwm li cas?
Video: Kev sib txuas gene ua haujlwm li cas?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Nyob rau hauv noob caj noob ces, cov kws tshawb fawb siv cov kev txwv tshwj xeeb enzyme kom tshem tawm qee cov strand lossis strands ntawm DNA … strands, hloov kho cov caj ces ntawm DNA thiab yuav muab cov txheej txheem tshiab DNA uas cov kws tshawb fawb xav tau.
Tus txheej txheem ntawm noob caj noob ces yog dab tsi?
Gene splicing yog txheej txheem ntawm chemically txiav DNA txhawm rau ntxiv cov hauv paus rau DNA strand Cov DNA yog txiav siv cov tshuaj tshwj xeeb hu ua txwv enzymes,. Gene splicing yog qhov kev tshem tawm ntawm introns los ntawm cov ntaub ntawv tseem ceeb ntawm cov noob tsis txuas ntxiv thaum lub sijhawm Transcription.
gene splicing ua haujlwm li cas thiab qhov tshwm sim ntawm tus txheej txheem yog dab tsi?
Splicing yog ib theem nrab ntawm cov txheej txheem thaum peb cov noob tau txiav txim siab rau hauv cov protein, cov neeg ua haujlwm ntawm lub xovtoojHauv cov txheej txheem no, DNA ntawm peb cov noob tau muab tso rau hauv "tus xa xov "RNA, ib qho molecule zoo ib yam li DNA uas ua haujlwm raws li cov qauv tsim los tsim cov proteins.
Yuav ua li cas thaum sib tw?
In splicing, qee seem ntawm RNA cov ntawv teev lus (introns) raug tshem tawm, thiab cov seem seem (exons) tau nyam rov qab ua ke. Qee cov noob tuaj yeem hloov pauv tau, ua rau kev tsim cov mRNA sib txawv ntawm mRNA molecules los ntawm tib daim ntawv sau thawj zaug.
Kev sib txuas ua haujlwm li cas?
Ib qhov sib txuas yog cov protein koom nrog kev tshem tawm cov introns los ntawm cov hlua ntawm tus xa xov RNA, kom cov exons tuaj yeem khi ua ke; Cov txheej txheem yuav siv qhov chaw nyob rau hauv cov khoom hu ua spliceosomes. Cov noob tau hloov pauv zuj zus thaum peb muaj hnub nyoog, thiab cov khoom sib txuas tuaj yeem thim rov qab qhov sib txawv.
Pom zoo:
Vim li cas kev sib txuas sib txuas yog qhov tseem ceeb?
Cov lattice reciprocal plays lub luag haujlwm tseem ceeb hauv kev tshawb fawb feem ntau ntawm cov qauv ntu, tshwj xeeb hauv kev xav ntawm kev sib txawv. Nyob rau hauv neutron thiab X-ray diffraction, vim yog Laue tej yam kev mob, qhov sib txawv ntawm cov khoom xa tuaj thiab cov duab hluav taws xob sib txawv ntawm cov siv lead uayog cov kab lattice vector .
Lub polymer twg muaj kev sib txuas ntawm kev sib txuas?
Ntawm no, los ntawm cov kev xaiv muab Nylon-6, 6 yog cov polymer uas muaj kev sib txuas ntawm amide. Yog li, nylons tseem hu ua polyamides vim lawv cov yam ntxwv amide pawg hauv cov pob txha caj qaum. Amide pawg nyob rau hauv nylon molecules yog heev polar, thiab tsim hydrogen bonding ib leeg .
Puas kev sib txuas lus tsis zoo kuj yog ib qho khoom ntawm kev sib txuas lus?
Kev sib txuas lus tsis zoo ("mis" + "kev sib txuas lus") txhais tau tias yog tsis ua tiav kev sib txuas lus kom txaus thiab zoo Nws yog ib hom kev sib txuas lus teeb meem. … Hom kev sib txuas lus tsis zoo tam sim no tuaj yeem raug cais raws li lub hauv paus ntawm kev tsis sib haum xeeb txog txoj cai sib txuas lus .
Kev sib txuas ntawm tes sib txuas li cas?
Intercellular junctions koom nrog cov hlwb epithelial rau ib leeg thiab cov ntaub so ntswg uas nyob ib sab; qee leej muaj npe los ntawm lawv hom thiab qee qhov los ntawm lawv cov duab . Kev sib txuas ntawm tes sib txuas nyob qhov twg?
Leej twg tsim tus qauv kev sib txuas lus ntawm kev sib txuas lus?
Tus qauv kev sib txuas lus ntawm kev sib txuas lus tsim los ntawm Wilbur Schramm ua raws li tus qauv linear. Schramm ntxiv peb yam tseem ceeb rau Shannon thiab Weaver qauv. Ua ntej, Schramm tau txheeb xyuas ob txheej txheem ntawm kev sib txuas lus:
