Dab tsi yog tsim thaum lub sij hawm txhais lus?
Dab tsi yog tsim thaum lub sij hawm txhais lus?

Video: Dab tsi yog tsim thaum lub sij hawm txhais lus?

Video: Dab tsi yog tsim thaum lub sij hawm txhais lus?
Video: tuav wb lub neej kom ruaj khov - Mang Vang ft. Christina Xyooj [Official Audio] 2021-22 2024, Hlis ntuj nqeg
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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.

Kuj paub, dab tsi yog ua thaum txhais lus?

Cov molecule uas tshwm sim los ntawm txhais lus yog protein - los yog ntau precisely, txhais lus ua kom luv luv ntawm cov amino acids hu ua peptides uas tau stitched ua ke thiab ua cov proteins. Thaum txhais lus , me me cov chaw tsim khoom protein hu ua ribosomes nyeem cov tub txib RNA sequences.

Tsis tas li ntawd, cov khoom txhais lus yog dab tsi? Cov khoom Kev hloov pauv yog RNA, uas tuaj yeem ntsib hauv daim ntawv mRNA, tRNA lossis rRNA thaum khoom ntawm kev txhais lus yog polypeptide amino acid saw, uas tsim cov protein. Transcription tshwm sim nyob rau hauv lub nucleus nyob rau hauv eukaryotic kab mob, thaum txhais lus tshwm sim hauv cytoplasm thiab endoplasmic reticulum.

Ib yam li ntawd, tib neeg nug, dab tsi tshwm sim 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.

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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