Video: Puas muaj kev txhais lus nyob rau hauv lub nucleus?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nyob rau hauv ib tug prokaryotic cell, transcription thiab txhais lus ua ke; uas yog, txhais lus pib thaum mRNA tseem tab tom ua ke. Nyob rau hauv ib tug eukaryotic cell, transcription tshwm sim nyob rau hauv lub nucleus , thiab kev txhais lus tshwm sim hauv cytoplasm.
Tsis tas li ntawd, yog vim li cas thiaj yuav tsum tau transcription tshwm sim nyob rau hauv lub nucleus?
Yog vim li cas transcription tshwm sim nyob rau hauv lub nucleus thiab tsis nyob hauv cytoplasm hauv eukaryotes? Kev sau ntawv (ua mRNA los ntawm DNA) yuav tsum tau tshwm sim nyob rau hauv lub nucleus vim qhov ntawd yog DNA. DNA yeej ib txwm nyob hauv nucleus tshwj tsis yog tias lub cell faib. Lub mRNA uas tau ua ntawm no yog ua tiav ua ntej tawm hauv nucleus.
Tsis tas li ntawd, dab tsi tseem nyob hauv lub nucleus thaum txhais lus? Lub hnab ntawv nuclear ntawm eukaryotic hlwb cais cov nucleus thiab cytoplasm. Nws yog xav kom muab faib transcription thiab ua cov tub txib RNAs (mRNAs), uas tshwm sim nyob rau hauv lub nucleus los ntawm cov protein synthesis ( txhais lus ), uas tau pom hauv cytoplasm.
Kuj nug, qhov twg transcription tshwm sim nyob rau hauv lub nucleus?
Kev sau ntawv tshwm sim nyob rau hauv lub nucleus . Nws siv DNA ua tus qauv los ua RNA molecule. RNA ces tawm ntawm nucleus thiab mus rau ib tug ribosome nyob rau hauv lub cytoplasm, qhov twg txhais tshwm sim . Kev txhais lus nyeem cov noob caj noob ces hauv mRNA thiab ua rau cov protein.
Vim li cas kev txhais lus tshwm sim hauv cytoplasm thiab tsis yog lub hauv paus?
Nws yuav tsum tshwm sim hauv nucleus qhov twg DNA hauv lub cell nyob. Txawm li cas los xij, ib zaug mRNA raug tsim, nws tawm ntawm nucleus thiab protein synthesis - txhais lus – tshwm sim hauv cytoplasm . Kev txhais lus tshwm sim ntawm cov chaw tshwj xeeb hauv cov cytoplasm ; nws tshwm sim rau cov ribosomes.
Pom zoo:
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