Video: Dab tsi tswj lub sijhawm ntawm kev faib cell?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A ntawm tes yog 'cycled' los ntawm txhua theem thiab los ntawm theem mus rau theem los ntawm kev ua ntawm cov proteins xws li cov cyclins thiab cyclin dependent kinases (cdks). Cyclins thiab cdks sib txawv nce thiab poob hauv kev ua haujlwm thaum lub sijhawm cell voj voog.
Hauv qhov no, dab tsi tswj lub sijhawm ntawm lub voj voog ntawm tes?
Kev Tswj Xyuas Zoo ntawm Cell Cycle Ob pawg ntawm cov protein, hu ua cyclins thiab cyclin-dependent kinases (Cdks), yog lub luag haujlwm rau kev nce qib ntawm ntawm tes los ntawm ntau qhov chaw kuaj xyuas. Cyclins tswj cov cell voj voog tsuas yog thaum lawv nruj nruj rau Cdks.
Qhov thib ob, vim li cas nws thiaj tseem ceeb uas cov cell muaj kev tswj hwm los tswj lub sijhawm ntawm kev faib cov cell? Nws yog tseem ceeb tias cov cell muaj "kev tswj hwm "vim tsis muaj nws hlwb yuav faib nrawm dhau los yog ua rau cov qog loj hlob (mob qog noj ntshav), lossis faib qeeb dhau thiab ua tsis tau lawv cellular muaj nuj nqi.
Ntxiv rau qhov no, cell division tswj li cas?
Yuav ua li cas noob tswj kev loj hlob thiab faib ntawm hlwb ? Ntau yam noob tau koom nrog hauv tswj ntawm ntawm tes kev loj hlob thiab faib . Kev tswj nruj ntawm cov txheej txheem no ua kom ntseeg tau tias muaj kev faib ua feem cov cell DNA tau theej kom raug, txhua qhov ua yuam kev hauv DNA raug kho, thiab txhua tus ntxhais ntawm tes tau txais tag nrho cov txheej ntawm chromosomes.
Dab tsi ua rau kev faib cell?
Xovtooj tswj lawv faib los ntawm kev sib txuas lus nrog kev siv tshuaj lom neeg cov cim qhia los ntawm cov protein tshwj xeeb hu ua cyclins. Cov teeb liab no ua zoo li cov keyboards qhia hlwb thaum twg pib faib thiab tom qab ntawd thaum twg yuav tsum tsis txhob faib. Nws yog ib qho tseem ceeb rau hlwb muab faib kom koj loj hlob thiab yog li ntawd koj txiav kho.
Pom zoo:
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