Cov txheej txheem:
Video: Dab tsi yog cov kauj ruam ntawm RNA synthesis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
RNA synthesis, zoo li yuav luag txhua cov tshuaj lom neeg polymerization, tshwm sim hauv peb theem: pib , elongation , thiab kev txiav txim . RNA polymerase ua ntau yam haujlwm hauv qhov no txheej txheem : 1. Nws tshawb nrhiav DNA rau pib cov chaw, tseem hu ua cov chaw txhawb nqa lossis tsuas yog txhawb nqa.
Yog li ntawd, dab tsi yog 4 kauj ruam nyob rau hauv tus txheej txheem ntawm transcription?
Transcription muaj plaub theem:
- Kev pib. Lub DNA molecule unwinds thiab sib cais los tsim ib tug me me qhib complex.
- Elongation. RNA polymerase txav raws tus qauv strand, ua ke ntawm mRNA molecule.
- Kev txiav txim. Hauv prokaryotes muaj ob txoj hauv kev uas tau txiav tawm.
- Kev ua haujlwm.
Tsis tas li ntawd, 3 kauj ruam tseem ceeb ntawm kev sau ntawv yog dab tsi? Transcription tshwm sim nyob rau hauv peb kauj ruam-pib, elongation, thiab termination-tag nrho cov qhia ntawm no.
- Kauj Ruam 1: Pib. Initiation yog qhov pib ntawm transcription.
- Kauj Ruam 2: Elongation. Elongation yog qhov sib ntxiv ntawm nucleotides rau mRNA strand.
- Kauj Ruam 3: Kev txiav txim.
Cov lus nug tseem yog, dab tsi yog 5 kauj ruam ntawm kev sau ntawv?
RNA tom qab ntawd nkag mus rau kev txhais lus los ua cov protein. Cov kauj ruam tseem ceeb ntawm kev sau ntawv yog pib , txhawb kev tshem tawm, elongation , thiab kev txiav txim.
Lub luag haujlwm ntawm tRNA yog dab tsi?
Hloov RNA / tRNA Hloov ribonucleic acid (tRNA) yog ib hom RNA molecule uas pab txiav txim siab tus xa xov RNA (mRNA) ib ntus rau hauv protein ntau . tRNAs ua haujlwm ntawm cov chaw tshwj xeeb hauv ribosome thaum lub sijhawm txhais lus, uas yog txheej txheem uas tsim cov khoom sib txuas. protein ntau los ntawm mRNA molecule.
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