Video: Kev txhais lus tshwm sim qhov twg?
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.
Hauv qhov no, qhov kev txhais lus tshwm sim nyob rau hauv lub cell?
Kev txhais lus yog hloov dua siab tshiab ntawm cov ntaub ntawv los ntawm mRNA (uas yog transcribed los ntawm DNA nyob rau hauv lub nucleus) rau cov amino acid sequences. Kev txhais lus tshwm sim nyob rau hauv lub cytoplasm cell . Nws xav tau mRNA sequences, Ribosomes thiab tRNAs.
Ib sab saum toj no, txhais li cas? Tag nrho cov txheej txheem hu ua gene expression. Hauv txhais lus , messenger RNA (mRNA) yog txiav txim siab nyob rau hauv lub ribosome decoding center los tsim ib tug tshwj xeeb amino acid saw, los yog polypeptide. Lub ribosome mam li txav mus (translocates) mus rau tom ntej mRNA codon mus txuas ntxiv cov txheej txheem, tsim cov amino acid saw.
Ib yam li ntawd, txhais li cas thiab nws tshwm sim qhov twg?
txhais lus / RNA txhais lus . Kev txhais lus yog cov txheej txheem uas cov protein yog tsim los ntawm cov ntaub ntawv muaj nyob rau hauv ib tug molecule ntawm messenger RNA (mRNA). Kev txhais lus tshwm sim nyob rau hauv ib tug qauv hu ua lub ribosome, uas yog lub Hoobkas rau synthesis ntawm cov proteins.
Vim li cas kev txhais lus tshwm sim hauv cytoplasm?
Yog li lub luag haujlwm ntawm mRNA yog nqa cov lus coded los ntawm cov nucleus uas cov ntaub ntawv khaws cia, mus rau cytoplasm qhov twg cov lus coded yog txhais rau hauv ib qho protein tshwj xeeb; li no nws lub npe - tub txib RNA. Kev txhais lus tshwm sim ntawm cov chaw tshwj xeeb hauv cov cytoplasm ; nws tshwm sim ntawm ribosomes.
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