Qhov sib txawv tseem ceeb ntawm nucleus thiab nucleolus yog lub nucleus yog lub cell organelle tseem ceeb tshaj plaws uas nyob hauv cov khoom siv caj ces ntawm eukaryotic cell thaum nucleolus yog cov kab mob me me nyob hauv lub nucleus uas muaj RNA.
Lub cell yog lub tsev thaiv ntawm tag nrho cov kab mob nyob. Muaj ntau yam khoom ntawm ib lub cell. Lub eukaryotic cell muaj cov kab mob sib txuas ntawm cov organelles. Txhua lub cell organelle muaj lub luag haujlwm tshwj xeeb los ua. Yog li, cell organelles ua haujlwm sib txawv uas yog qhov tseem ceeb rau kev ciaj sia ntawm lub cell. Lub nucleus yog lub ntsiab thiab tseem ceeb tshaj plaws ntawm tes organelle ntawm eukaryotic cell. Nws yog qhov chaw uas cov khoom siv caj ces nyob hauv cov hlwb eukaryotic. Lub nucleolus yog thaj chaw hauv lub nucleus uas muaj RNA.
Nucleus yog dab tsi?
Nucleus yog cov kab mob uas muaj cov kab mob sib txuas uas muaj nyob hauv yuav luag txhua lub cell eukaryotic tshwj tsis yog qee lub hlwb xws li cov qe ntshav liab. Nucleus yog lub organelle loj tshaj plaws nyob rau hauv cov tsiaj hlwb. Nws feem ntau yog puag ncig. Tsis tas li ntawd, qhov no yog ib qho tseem ceeb organelles hauv ib lub cell. Tsis tas li ntawd, cov qauv ntawm cov ntaub so ntswg nuclear zoo ib yam li cov qauv ntawm cov plasma membrane. Lub hnab ntawv nuclear sab nrauv koom nrog qhov ntxhib endoplasmic reticulum thiab tej zaum yuav muaj ribosomes ntawm nws. Nuclear envelop tsis txuas ntxiv thiab muaj qhov chaw hu ua pores. Lawv tuav cov proteins, uas ua raws li cov channel trans-membrane. Tsis tas li ntawd, lub hnab ntawv nuclear cais cov ntsiab lus hauv lub nucleus los ntawm cytoplasm thiab lwm yam organelles.
Daim duab 01: Cheebtsam ntawm Tsiaj Cell
Muaj cov kua nplaum uas hu ua nucleoplasm hauv lub nucleus. Nucleoplasm zoo ib yam li cytoplasm. Feem ntau ntawm cov cell tsev cov khoom siv caj ces ntawm cov kab mob hauv lub nucleus. DNA molecules, uas yog lub luag hauj lwm rau kev tswj lub cell thiab inheriting noob, yog teem rau hauv chromosomes nyob rau hauv lub nucleus. Thaum lub sij hawm nuclear kev faib tawm, lub nucleus dhau mus plaub theem: prophase, metaphase, anaphase thiab telophase. Thaum lub sij hawm no, lub nucleus ntawm ib lub xovtooj hloov pauv, thiab thaum kawg muab faib ua ob (hauv mitosis) lossis plaub (hauv meiosis) tus ntxhais nuclei.
Nucleolus yog dab tsi?
Nucleolus yog cov qauv pom nyob rau hauv lub nucleus. Nws yog qhov chaw tuab heev ntawm lub nucleus, uas nyob hauv 25% ntawm tag nrho cov ntim ntawm lub nucleus. Ntxiv mus, muaj peb thaj tsam ntawm cov nucleolus: fibrillar centres, ntom fibrillar tivthaiv, thiab granular tivthaiv.
Daim duab 02: Nucleus thiab Nucleolus
Ntxiv mus, lub nucleolus yog ib qho sub-organelle uas tsis yog membranous. Nws muaj DNA units uas yog lub luag hauj lwm rau coding rRNA rau ribosome ntau lawm. Yog li, lub luag haujlwm tseem ceeb ntawm nucleolus yog los tsim rRNA thiab tsim cov ribosomes (ribosome biogenesis).
Dab tsi zoo sib xws ntawm Nucleus thiab Nucleolus?
- Nucleus thiab nucleolus yog ob yam ntawm eukaryotic cell.
- Qhov tseeb, nucleolus yog ib feem ntawm lub nucleus.
- Thiab, ob leeg muaj nucleic acids.
- Ntxiv mus, lawv tseem ceeb rau cov protein thiab RNA ntau lawm.
Qhov txawv ntawm Nucleus thiab Nucleolus yog dab tsi?
Nucleus yog ib qho tseem ceeb ntawm cov cell organelle uas nyob hauv cov khoom siv caj ces ntawm cov kab mob eukaryotic thaum nucleolus yog ib feem ntawm cov nucleus uas muaj RNA thiab nqa tawm ribosome biogenesis. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm nucleus thiab nucleolus. Yog li, nucleolus yog ib tug sub-organelle, whereas nucleus yog lub ntsiab organelle nyob rau hauv ib lub cell.
Ntxiv mus, qhov sib txawv ntxiv ntawm nucleus thiab nucleolus yog cov nucleus yog ob lub membranous organelle whereas nucleolus tsis muaj daim nyias nyias. Tsis tas li ntawd, tseem muaj qhov sib txawv ntawm cov nucleus thiab nucleolus. Lub luag haujlwm tseem ceeb ntawm nucleus yog tswj hwm cov haujlwm ntawm tes thiab tswj cov noob qhia thaum lub luag haujlwm tseem ceeb ntawm nucleolus yog tsim cov ribosomes. Tsis tas li ntawd, nucleus yog lub luag haujlwm tseem ceeb rau kev tsim mRNA thaum nucleolus yog lub luag haujlwm tseem ceeb rau kev tsim rRNA.
Summary – Nucleus vs Nucleolus
Nyob rau hauv cov ntsiab lus ntawm qhov sib txawv ntawm nucleus thiab nucleolus, lub nucleus yog lub ntsiab cell organelle ntawm eukaryotic cell. Nws nyob hauv cov khoom siv caj ces ntawm lub cev. Lub caij no, nucleolus yog ib feem ntawm lub nucleus; nws yog ib qho chaw ntom ntom ntawm cov nucleus. Ntxiv mus, nws yog ib tug sub-organelle. Nucleolus yog lub luag haujlwm rau tsim rRNA thiab ribosomes. Yog li, nws yog nplua nuj nyob rau hauv RNA thaum nucleus yog nplua nuj nyob rau hauv DNA. Ntxiv mus, lub hnab ntawv nuclear nyob ib puag ncig lub nucleus thaum nucleolus tsis yog membranous.
