Video: Dab tsi yog nucleolus ua los ntawm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub nucleus ntawm ntau lub hlwb eukaryotic muaj cov qauv hu ua a nucleolus . Cov nucleolus siv nce nyob ib ncig ntawm 25% ntawm qhov ntim ntawm lub nucleus. Cov qauv no yog ua li ntawm cov protein thiab ribonucleic acids (RNA). Nws lub luag haujlwm tseem ceeb yog rov sau dua ribosomal RNA (rRNA) thiab ua ke nrog cov proteins.
Ua raws li qhov no hauv kev xav, dab tsi yog qhov nucleolus tsim tawm?
Lub nucleolus yog tsim los ntawm DNA, rRNA thiab ribosomal proteins . Lub eukaryotic cell tsis muaj nucleolus yuav poob lub peev xwm los ua ke cov proteins . Raws li ob tug ribosomal ua subunits tawm ntawm nucleus Los ntawm lub cev nqaij daim tawv, cov subunits koom ua ke los tsim ib qho kev ua haujlwm ribosome.
Puas yog nucleolus ua los ntawm chromatin? Chromatin yog ua ntawm DNA, RNA, thiab nuclear proteins. Thaum lub chromatin los ua ke, koj tuaj yeem pom cov chromosomes. Koj tseem yuav pom cov nucleolus sab hauv ntawm lub nucleus. Thaum koj saib los ntawm lub tshuab microscope, nws zoo li lub hauv paus ntawm lub nucleus.
Ntawm no, puas muaj nucleolus muaj DNA?
Lub nucleus ntawm eukaryotic cell muaj tus DNA , genetic khoom ntawm lub cell. Cov nucleolus yog lub hauv paus ntawm lub cell nucleus thiab yog tsim los ntawm ribosomal RNA, proteins thiab DNA . Nws kuj muaj ribosomes nyob rau hauv ntau theem ntawm synthesis. Cov nucleolus ua tiav kev tsim cov ribosomes.
Dab tsi yog qhov tshwj xeeb ntawm nucleolus?
nucleolus Ib qho kev qhia meej meej, feem ntau kheej kheej ntawm thaj chaw eukaryotic nucleus, muaj li ntawm cov ntaub qhwv ntom ntom thiab granules. Nws muaj pes tsawg leeg zoo ib yam li chromatin, tshwj tsis yog tias nws yog nplua nuj nyob rau hauv RNA thiab protein ntau. Nws yog qhov chaw ntawm kev sib txuas ntawm ribosomal RNA, uas tsim ib feem tseem ceeb ntawm ribosomes.
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