Video: Dab tsi yog qhov txawv ntawm kev txhais lus prokaryotic thiab eukaryotic?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tus yuam sij Qhov sib txawv ntawm eukaryotic thiab prokaryotic txhais lus yog tias eukaryotic txhais lus thiab transcription yog asynchronous txheej txheem whereas prokaryotic txhais lus thiab transcription yog ib tug synchronous txheej txheem.
Ntawm no, qhov txawv ntawm prokaryotic thiab eukaryotic hlwb nyob rau hauv transcription thiab txhais lus yog dab tsi?
Nyob rau hauv lub cell prokaryotic , transcription thiab translation ua ke; uas yog, txhais lus pib thaum mRNA tseem tab tom ua ke. Hauv eukaryotic cell , kev sau ntawv tshwm sim hauv nucleus, thiab txhais lus tshwm sim hauv cytoplasm.
Tom qab ntawd, lo lus nug yog, qhov txawv ntawm cov protein synthesis ntawm eukaryotes thiab prokaryotes yog dab tsi? Hauv eukaryotes , protein synthesis tshwm sim hauv cytoplasm. Hauv prokaryotes , protein synthesis pib txawm ua ntej transcription ntawm mRNA molecule tiav. Qhov no hu ua coupled transcription - translation. Hauv eukaryotes , feem ntau ntawm cov noob muaj introns los yog tsis coding sequences nrog rau exons los yog coding sequences.
Kuj Paub, dab tsi yog qhov sib txawv loj hauv kev sau ntawv ntawm prokaryotes thiab eukaryotes?
Tsis muaj cov qauv zoo li no pom hauv prokaryotes . Lwm tus qhov sib txawv tseem ceeb ntawm ob yog li ntawd kev sau ntawv thiab kev txhais lus tshwm sim ib txhij nyob rau hauv prokaryotes thiab hauv eukaryotes RNA yog thawj zaug luam tawm nyob rau hauv lub nucleus thiab ces txhais nyob rau hauv lub cytoplasm.
Dab tsi yog kev txhais lus hauv DNA?
Kev txhais lus yog tus txheej txheem uas siv cov ntaub ntawv dhau los ntawm DNA raws li tus tub txib RNA thiab hloov nws mus rau hauv cov amino acids ua ke nrog peptide bonds. Lub ribosome yog qhov chaw ntawm qhov kev ua no, ib yam li RNA polymerase yog qhov chaw ntawm mRNA synthesis.
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