Video: Dab tsi yog txheej txheem hu ua thaum lub cell nucleus faib los tsim ob lub nuclei zoo tib yam?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov no tshwm sim thaum lub sij hawm ib txheej txheem hu ua mob mitosis. Mitosis yog tus txheej txheem ntawm splitting cell cov genetic khoom rau hauv ob tshiab nuclei.
Hais txog qhov no, cov txheej txheem dab tsi ntawm tes mus los ntawm kev faib nws cov nucleus los ua ob lub nuclei zoo tib yam?
Mitosis yog txheej txheem hauv cell faib qhov twg lub nucleus faib ua ob lub nuclei , cwb a zoo ib yam teeb ntawm chromosomes. Mitosis faib rau hauv plaub theem: prophase, metaphase, anaphase, thiab telophase. Cov shortest theem ntawm lub cell Lub voj voog hu ua cytokinesis (division of tus cytoplasm).
Tsis tas li ntawd, thaum lub npe tshiab nuclei hu ua? Thaum lub sij hawm mitotic, lub cell yuav raug mitosis daim ntawv ob ncua nuclei thiab ces faib rau daim ntawv ob tshiab Ib leeg hlwb thaum cytokinesis. Tom qab mitosis ob tshiab cov hlwb raug tsim los ntawm cov txheej txheem hu ua cytokinesis. Mitosis tsuas yog ib feem ntawm qhov yog hu ua lub voj voog ntawm tes.
Ib yam li ntawd ib tug yuav nug, dab tsi yog kev faib ntawm cov hlwb nucleus hu ua?
Teb thiab piav qhia: Kev faib ntawm nucleus yog hu ua mob mitosis. Hauv mitosis, cov viv ncaus sib tw chromatids yuav sib cais los ntawm ib leeg, nrog rau ib daim ntawv xa tawm
Lub neej ntawm lub cell hu ua dab tsi?
Nws yog qhov tseeb tias tus kheej hlwb muaj finite lub neej ncua , thiab thaum lawv tuag lawm lawv raug hloov tshiab hlwb . Ntshav liab hlwb nyob li ntawm plaub lub hlis, thaum cov ntshav dawb hlwb nyob nruab nrab ntau tshaj ib xyoos. Daim tawv nqaij hlwb nyob li ntawm ob lossis peb lub lis piam. Colon hlwb muaj nws ntxhib: Lawv tuag tom qab li plaub hnub.
Pom zoo:
Yuav ua li cas cov txheej txheem ntawm cell faib nyob rau hauv eukaryotes feem ntau zoo ib yam li cell faib nyob rau hauv prokaryotes?
Tsis zoo li eukaryotes, prokaryotes (uas suav nrog cov kab mob) tau txais ib hom kev faib cell hu ua binary fission. Hauv qee qhov, cov txheej txheem no zoo ib yam li mitosis; Nws yuav tsum tau rov ua dua ntawm cov cell chromosomes, cais ntawm cov theej DNA, thiab kev sib cais ntawm niam txiv cell cytoplasm
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