Kev txhais lus hauv DNA tshwm sim qhov twg?
Kev txhais lus hauv DNA tshwm sim qhov twg?

Video: Kev txhais lus hauv DNA tshwm sim qhov twg?

Video: Kev txhais lus hauv DNA tshwm sim qhov twg?
Video: Npau Suav pom Dej zoo phem li cas 2024, Kaum ib hlis
Anonim

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.

Ntxiv mus, 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.

Tsis tas li ntawd, yuav ua li cas thaum 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.

Tom qab ntawd, qhov twg hauv lub xov tooj ntawm tes txhais lus tshwm sim?

Teb thiab piav qhia: Kev txhais lus yog hloov pauv 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.

DNA txhais li cas rau mRNA?

Kev sau ntawv. Transcription yog tus txheej txheem uas DNA yog theej (transcribed) rau mRNA , uas nqa cov ntaub ntawv xav tau rau cov protein synthesis. Tus tub txib ua ntej RNA yog tom qab ntawd "kho" los tsim qhov xav tau mRNA molecule hauv tus txheej txheem hu ua RNA splicing.

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