Video: RNA siv rau dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ribonucleic acid ( RNA ) yog ib tug polymeric molecule tseem ceeb nyob rau hauv ntau yam lom lub luag hauj lwm nyob rau hauv coding, decoding, kev cai thiab kev qhia ntawm noob. RNA thiab DNA yog nucleic acids, thiab, nrog rau lipids, proteins thiab carbohydrates, ua plaub loj macromolecules tseem ceeb rau txhua hom kev paub ntawm lub neej.
Tsis tas li ntawd, lub luag haujlwm tseem ceeb ntawm RNA yog dab tsi?
Lub luag haujlwm tseem ceeb ntawm RNA yog nqa cov ntaub ntawv ntawm cov amino acid ib ntus los ntawm cov noob mus rau qhov twg cov proteins yog sib sau ua ke ntawm ribosomes hauv lub cytoplasm . Qhov no yog ua los ntawm tub txib RNA (mRNA). Ib txoj hlua DNA ib leeg yog daim ntawv qhia rau mRNA uas tau sau los ntawm DNA strand.
Qhov thib ob, RNA yog dab tsi? Lwm hom nucleic acid, RNA , feem ntau yog koom nrog hauv cov protein synthesis. Ib yam li hauv DNA, RNA yog ua los ntawm monomers hu ua nucleotides. Txhua nucleotide yog ua nce ntawm peb yam: ib tug nitrogenous puag, ib tug pentose (tsib-carbon) qab zib hu ua ribose, thiab ib pawg phosphate.
Qhov thib ob, 3 hom RNA yog dab tsi thiab lawv txoj haujlwm?
Peb hom loj ntawm RNA yog mRNA , lossis tus neeg xa xov liaison RNA, uas ua haujlwm ib ntus luam ntawm cov ntaub ntawv pom hauv DNA; rRNA , los yog ribosomal ua RNA, uas ua haujlwm raws li cov qauv tsim ntawm cov qauv tsim cov protein hu ua cov ribosomes ; thiab thaum kawg, tRNA , los yog hloov RNA , lub ferry amino acids mus rau lub ribosome yuav tsum assembled
Lub cell ua RNA li cas?
RNA yog synthesized los ntawm DNA los ntawm ib tug enzyme hu ua RNA polymerase thaum lub sij hawm tus txheej txheem hu ua transcription. Qhov tshiab RNA Cov kab ke sib txuas ntxiv rau lawv cov qauv DNA, tsis yog cov ntawv luam zoo tib yam ntawm cov qauv. RNA Tom qab ntawd tau muab txhais ua cov protein los ntawm cov qauv hu ua ribosomes.
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