Video: Dab tsi yog lub luag haujlwm ntawm kev sau thiab txhais lus?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
a. Neeg xa xov liaison RNA (mRNA), uas nqa cov ntaub ntawv caj ces los ntawm DNA thiab siv los ua tus qauv rau kev tsim cov protein. RNA siv cov ntaub ntawv ntawd rau hauv cytoplasm, qhov twg lub cell siv nws los tsim cov proteins tshwj xeeb, RNA synthesis yog kev sau ntawv ; protein synthesis yog txhais lus.
Tom qab ntawd, lub hom phiaj ntawm kev sau thiab txhais lus yog dab tsi?
Cov lub hom phiaj ntawm kev sau ntawv yog ua RNA cov ntawv luam ntawm tus kheej cov noob uas lub cell siv tau hauv biochemistry. Cov lub hom phiaj ntawm txhais lus yog los tsim cov proteins, uas yog siv rau tsheej lab ntawm cov cellular zog.
Tom qab, lo lus nug yog, dab tsi yog lub luag hauj lwm ntawm transcription? Kev sau ntawv yog hais txog kev tsim cov khoom pub dawb ntawm RNA uas tau theej los ntawm DNA ib ntus. Qhov no tshwm sim hauv kev tsim cov tub txib RNA (mRNA), uas yog siv los tsim cov protein ntawm lwm cov txheej txheem hu ua kev txhais lus. Lawv khi rau cov kab ke tshwj xeeb ntawm DNA thiab tswj cov kev sau ntawv DNA mus rau mRNA.
Ntawm no, dab tsi yog lub luag hauj lwm ntawm transcription thiab txhais lus nyob rau hauv protein synthesis?
Cell siv cov noob rau synthesize cov protein . Qhov no yog ob kauj ruam txheej txheem. Thawj kauj ruam yog kev sau ntawv nyob rau hauv uas ib theem zuj zus ntawm ib noob yog replicated nyob rau hauv ib tug RNA molecule. Cov kauj ruam thib ob yog txhais lus nyob rau hauv uas RNA molecule ua hauj lwm raws li ib tug cai rau tsim ib tug amino-acid saw (polypeptide).
Lub luag haujlwm ntawm kev txhais lus yog dab tsi?
Hauv molecular biology thiab noob caj noob ces, txhais lus yog cov txheej txheem uas ribosomes nyob rau hauv cytoplasm los yog ER synthesize proteins tom qab cov txheej txheem ntawm transcription ntawm DNA rau RNA nyob rau hauv lub cell lub nucleus. Cov polypeptide tom qab folds rau hauv ib qho active protein thiab ua nws muaj nuj nqi hauv cell.
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