Cov txheej txheem:
- Cov ntsiab lus tseem ceeb:
- Transcription tshwm sim nyob rau hauv peb kauj ruam-pib, elongation, thiab termination-tag nrho cov qhia ntawm no
Video: Dab tsi yog qhov tsim nyog rau kev sau ntawv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
RNA polymerase yog qhov tseem ceeb vim nws ua tiav kev sau ntawv , cov txheej txheem ntawm kev luam DNA (deoxyribonucleic acid, cov khoom siv caj ces) rau hauv RNA (ribonucleic acid, zoo ib yam tab sis luv luv-nyob molecule). Kev sau ntawv yog ib qhov tseem ceeb kauj ruam hauv kev siv cov ntaub ntawv los ntawm cov noob hauv peb DNA los ua cov protein.
Raws li txoj cai, dab tsi cov ntsiab lus xav tau rau kev sau ntawv?
Cov ntsiab lus tseem ceeb:
- Kev hloov pauv yog thawj kauj ruam hauv kev qhia gene.
- Kev hloov pauv yog ua los ntawm cov enzymes hu ua RNA polymerases, uas txuas nucleotides los ua ib qho RNA strand (siv DNA strand ua tus qauv).
- Transcription muaj peb theem: pib, elongation, thiab termination.
Tsis tas li ntawd, lub hom phiaj ntawm kev sau ntawv yog dab tsi? Piav txog txheej txheem thiab lub hom phiaj ntawm kev sau ntawv . Cov lub hom phiaj ntawm kev sau ntawv yog tsim ib daim ntawv theej mRNA ntawm cov noob, kom tso cai rau cov ntaub ntawv genetic kis tawm ntawm lub nucleus, los ntawm cov pores nuclear uas nws tuaj yeem siv los sib sau ua ke cov protein.
Kuj Paub, dab tsi yog txheej txheem ntawm transcription?
Kev sau ntawv yog cov txheej txheem los ntawm qhov uas cov ntaub ntawv nyob rau hauv ib tug strand ntawm DNA yog theej rau hauv ib tug tshiab molecule ntawm messenger RNA (mRNA). DNA muaj kev nyab xeeb thiab ruaj khov khaws cov khoom siv caj ces hauv cov nuclei ntawm cov hlwb raws li kev siv, lossis qauv.
Dab tsi yog 3 kauj ruam tseem ceeb ntawm kev sau ntawv?
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.
Pom zoo:
Dab tsi yog qhov cuab yeej tsim nyog ua ntej kev tshawb xav ntawm tes yuav tsim tau?
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Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
Quantile. txhua chav kawm muaj cov yam ntxwv sib npaug. Ib qho kev faib tawm ntau yog zoo haum rau cov ntaub ntawv faib tawm. Quantile muab tib tus lej ntawm cov ntaub ntawv muaj nuj nqis rau txhua chav kawm
Qhov kev sib npaug twg yog qhov tsim nyog los suav cov cua sov uas tsim los ntawm HCl NaOH cov tshuaj tiv thaiv?
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Puas muaj qhov kev txiav txim tsim nyog rau kev ntsuas lub cev?
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Cov txheej txheem dab tsi uas tus kws tshawb fawb siv los tsim ntau cov ntawv luam ntawm DNA xav tau sau rau hauv daim ntawv dawb paug 1?
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