Lub sijhawm sau ntawv, ib feem ntawm lub cell DNA ua tus qauv rau kev tsim cov RNA molecule.
RNA tsim nyob qhov twg?
Peb ntawm rRNA molecules yog synthesized nyob rau hauv lub nucleolus, thiab ib tug yog synthesized nyob rau lwm qhov. Hauv cytoplasm, ribosomal RNA thiab cov protein sib xyaw ua ke los tsim cov nucleoprotein hu ua ribosome. Lub ribosome khi mRNA thiab ua cov protein synthesis. Ntau lub ribosomes tuaj yeem txuas rau ib qho mRNA txhua lub sijhawm.
RNA strands tsim nyob qhov twg?
Kev txhais yuav siv qhov chaw hauv lub nucleus. Nws siv DNA ua tus qauv los ua ib qho RNA (mRNA) molecule. Thaum lub sij hawm transcription, ib tug strand ntawm mRNA yog ua uas yog complementary rau ib tug strand ntawm DNA. Daim duab 1 qhia tias qhov no tshwm sim li cas.
mRNA strand nyob qhov twg?
mRNA yog tsim thaum lub sijhawm sau ntawv. Thaum lub sij hawm transcription txheej txheem, ib strand ntawm DNA yog txiav txim los ntawm RNA polymerase, thiab mRNA yog synthesized. Lub cev, mRNA yog ib txoj hlua ntawm nucleotideshu ua ribonucleic acid, thiab yog ib leeg-stranded.
Puas muaj qhov sib txawv ntawm mRNA thiab RNA?
Ib hom RNA hu ua mRNA, uas sawv cev rau "tus xa xov RNA." mRNA yog RNA uas nyeem los ntawm ribosomes los tsim cov proteins. Thaum txhua hom RNA koom nrog hauv kev tsim cov protein, mRNA yog ib qho uas ua tau raws li tus xa xov. … Lub mRNA yog tsim nyob rau hauv lub nucleus thiab xa mus rau lub ribosome, zoo li tag nrho cov RNA.