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Video: Cov cell yuav tsum tau ua dab tsi thiaj li tsis ua rau me me?
![Video: Cov cell yuav tsum tau ua dab tsi thiaj li tsis ua rau me me? Video: Cov cell yuav tsum tau ua dab tsi thiaj li tsis ua rau me me?](https://i.ytimg.com/vi/_8jui-3KU1E/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Xovtooj tsim tawm los ntawm kev faib ua ib nrab, txheej txheem hu ua ntawm tes faib. Cov cell yuav tsum ua dab tsi nruab nrab ntawm kev sib faib rau ua tseeb tias lawv tsis ua xwb tau me dua thiab me dua ? < nws hlwb xav tau kom loj hlob> 2. Cov ntaub ntawv keeb kwm ntawm a ntawm tes yog nqa hauv nws cov DNA (luv rau deoxyribonucleic acid).
Ib sab ntawm qhov no, cov cell yuav tsum tau ua dab tsi kom ntseeg tau tias lawv tsis tau me dua?
Cov lus teb yog: ntawm tes loj me me. Ua ntej pib mob mitosis, hlwb yuav tsum ob npaug ntawm lawv cov khoom siv caj ces, loj dua me me, thiab ob npaug ntawm lwm cov organelles. Kev loj hlob ntawm hlwb raws li kev npaj rau kev faib faib tshwm sim thaum G2 theem ntawm kev sib tshuam.
Qhov thib ob, cov cell yuav tsum tau ua dab tsi ua ntej lawv faib? Ua ntej ntawm tes tau faib , nws yuav tsum tau nthuav nws cov chromosomes thiab theej tag nrho nws cov DNA, yog li txhua qhov tshiab ntawm tes yuav tau a ua tiav daim ntawv theej.
Ntxiv mus, cov cell yuav tsum tau ua dab tsi kom ntseeg tau tias tag nrho cov DNA tau dhau mus rau txhua tus ntxhais ntawm tes?
Mitosis. Mitosis tau siv los tsim ntxhais cell uas yog caj ces zoo ib yam rau niam txiv hlwb . Cov ntawm tes luam - lossis 'rov ua dua tshiab' - nws cov chromosomes, thiab tom qab ntawd faib cov chromosomes theej sib npaug rau xyuas kom tseeb tias txhua tus ntxhais cell muaj a tag nrho cov teeb.
Yuav muaj dab tsi tshwm sim yog tias kev faib xov tooj ntawm tes tsis raug tswj?
Cov kws tshawb fawb hais tias ib tus niam txiv ntawm tes , los yog faib ntawm tes , tsim ob tus ntxhais zoo tib yam hlwb (yam zoo li ntxaib). Yog cov ntawm tes cycle yog tsis ua tib zoo tswj , nws tau ua rau muaj kab mob hu ua mob qog noj ntshav, uas ua rau cell faib rau tshwm sim nrawm heev. Ib qho qog tau tshwm sim los ntawm hom kev loj hlob no.
Pom zoo:
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Yuav ua li cas tiv thaiv menyuam roj gas Kaw daim di ncauj. Tej zaum txoj hauv kev yooj yim tshaj plaws los tiv thaiv roj hauv menyuam yaus yog kom txo cov pa uas lawv nqos. Tilt lub raj mis. Lub raj mis tsim lub sijhawm tshwj xeeb rau kev nqus cua. Burp tus menyuam. Burp koj tus menyuam ob lub sijhawm thiab tom qab pub mis. Noj txawv