Video: Puas yog prokaryotic mRNA muaj lub hau thiab tus Tsov tus tw?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
“Lub 5' cap tiv thaiv nascent mRNA los ntawm degradation thiab pab nyob rau hauv ribosome khi thaum txhais lus. Poly hnab (A) qab yog ntxiv rau 3' kawg ntawm lub pre- mRNA ib zaug elongation tiav. Tab sis li cas txog lub Prokaryotic mRNA ?
Yog li ntawd, puas prokaryotic mRNA muaj poly A tail?
Cov poly (A) tail yog ib qho tseem ceeb rau nuclear export, txhais lus, thiab stability ntawm mRNA . mRNA molecules nyob rau hauv ob qho tib si prokaryotes thiab eukaryotes muaj polyadenylated 3'-kawg, nrog rau prokaryotic poly(A) tails feem ntau luv thiab tsawg dua mRNA polyadenylate molecules.
Ib yam li ntawd, lub hau thiab tus Tsov tus tw ntawm mRNA yog dab tsi? Ob qhov kawg ntawm pre- mRNA raug hloov kho los ntawm kev sib ntxiv ntawm pawg tshuaj. Cov pab pawg thaum pib (5' kawg) hu ua a cap , thaum pab pawg kawg (3' kawg) hu ua a qab.
Yog li ntawd, puas prokaryotic mRNA muaj lub hau?
Ib zaug nyob rau hauv qhov chaw, lub cap plays lub luag haujlwm hauv ribosomal lees paub ntawm tus tub txib RNA thaum lub sij hawm kev txhais lus rau hauv cov protein. Prokaryotes ua tsis yog muaj zoo ib yam cap vim lawv siv lwm cov cim rau kev lees paub los ntawm ribosome.
Kev ua haujlwm ntawm lub hau thiab tus Tsov tus tw ntawm eukaryotic mRNA yog dab tsi?
- Lawv koom nrog hauv kev ua kom nrawm ntawm kev txhais lus los ntawm ribosome. - Lawv koom nrog hauv kev tshem tawm exons los ntawm mRNA. - Lawv koom nrog tiv thaiv kev txhais lus ntawm mRNA kom txog thaum nws tawm mus nucleus.
Pom zoo:
Puas yog cov cell prokaryotic muaj mRNA?
Txij li thaum prokaryotic DNA tsis raug cais tawm ntawm cytoplasm los ntawm ib daim nyias nyias, kev txhais lus pib ntawm mRNA molecules ua ntej transcription tiav. Yog li, transcription thiab txhais lus yog ua ke hauv prokaryotes. Prokaryotic mRNAs yog polygenic, tsis muaj introns lossis exons, thiab nyob rau hauv lub cell luv
Puas yog cov plaub hau daj lossis cov plaub hau xim av muaj ntau dua?
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Muaj pes tsawg guanine bases puas yog 50 lub hauv paus khub ob txoj hlua DNA 100 bases tag nrho muaj yog tias nws muaj 25 adenine bases?
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Dab tsi yog qhov txawv ntawm cov hlwb prokaryotic thiab prokaryotic?
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