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Video: Dab tsi yog ib feem ntawm tes tswj kev faib cell?
![Video: Dab tsi yog ib feem ntawm tes tswj kev faib cell? Video: Dab tsi yog ib feem ntawm tes tswj kev faib cell?](https://i.ytimg.com/vi/-L8ds57jlnI/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Thaum lub sij hawm mitosis, lub nucleus, uas tuav lub cell cov genetic ntaub ntawv, muab faib. Thaum lub sij hawm cytokinesis, lwm tus ntawm tes yog muab faib. Qhov tshwm sim yog ob qhov tsim tshiab, zoo ib yam hlwb . Cov theem tseem ceeb ntawm lub voj voog ntawm tes hu ua interphase.
Ib yam li ntawd, ib tug yuav nug, dab tsi ntawm tes yog lub luag haujlwm rau kev faib?
Centrioles. yog khub organelles uas nyob rau hauv lub cytoplasm nkaus xwb coj ib feem hauv cell faib . Raws li koj yuav pom nyob rau hauv daim duab ntawm mitosis, ua ntej lawv duplicate thiab ces txhua khub tsiv mus rau ib qho chaw hu ua tus ncej ntawm lub ntawm tes thiab zoo li thauj tog rau nkoj spindle fibers.
Ib qho ntxiv, dab tsi yog 3 txoj hauv kev tseem ceeb uas cov cell tswj hwm kev sib faib? Yog li lub cev thiab lub cev loj yog txiav txim siab los ntawm peb qhov tseem ceeb txheej txheem: ntawm tes kev loj hlob, cell faib , thiab ntawm tes tuag. Txhua tus tau tswj hwm ntawm nws tus kheej-ob qho tib si los ntawm cov kev pabcuam hauv lub cev thiab los ntawm cov teeb liab sab nraud uas muaj cov lej tswj cov program no.
Tsis tas li lo lus nug yog, dab tsi yog kev tswj ntawm cell division?
Ntau yam noob tau koom nrog hauv tswj cell kev loj hlob thiab kev faib . Kev tswj nruj ntawm cov txheej txheem no ua kom ntseeg tau tias muaj kev faib ua feem cell cov DNA tau luam tawm kom raug, txhua qhov yuam kev hauv DNA raug kho, thiab txhua tus ntxhais ntawm tes tau txais tag nrho cov chromosomes.
Dab tsi txwv cov hlwb ntawm kev faib?
Thaum laus cell nres faib , lawv dhau los ua "neeg laus." Cov kws tshawb fawb ntseeg tias ib yam uas ua rau neeg laus yog qhov ntev ntawm a cell cov telomeres, lossis lub kaus mom tiv thaiv qhov kawg ntawm chromosomes. Txhua zaus chromosomes reproduce, telomeres tau luv. Raws li telomeres dwindle, kev faib ntawm tes nres tag nrho
Pom zoo:
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Thaum lub sij hawm Binary fission thiab mitosis theej tawm cov DNA cov ntsiab lus ntawm kev tsim cov niam txiv ntawm tes tau muab cais ua ob qhov sib npaug sib luag uas yog lub hom phiaj kom xaus rau hauv ob tus ntxhais ntxhais. Ib feem kawg ntawm cov txheej txheem ntawm kev tsim cov cell yog faib cell, thaum tus ntxhais lub cev lub cev sib cais los ntawm niam txiv ntawm tes
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Ib lub cell yog 'cycled' los ntawm txhua theem thiab los ntawm theem mus rau theem los ntawm kev txiav txim ntawm cov protein suav nrog tshwj xeeb cyclins thiab cyclin nyob ntawm kinases (cdks). Sib txawv cyclins thiab cdks sawv thiab poob rau hauv kev ua si thaum lub sij hawm lub voj voog ntawm tes
Cov kab mob sib koom ua ke twg yog tus cwj pwm los ntawm kev sib koom ua ke ntawm kev txav mus los thiab kev sib koom ua ke ntawm qhov hnyav ntawm cov pob qij txha uas feem ntau yog relieved los ntawm so?
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Osteoarthritis feem ntau cuam tshuam rau txhais tes, qis nraub qaum, caj dab, thiab hnyav sib koom tes xws li hauv caug, lub duav, thiab ko taw
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Nws tswj hwm kev ua haujlwm ntawm tus kheej lossis endocrine hauv kev teb rau kev txhawb siab thiab tseem koom nrog hauv kev txhawb tus cwj pwm. Lub limbic system yog tsim los ntawm plaub yam tseem ceeb: lub hypothalamus, lub amygdala, lub thalamus, thiab lub hippocampus
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Socatic cell faib ua cov cell tshiab, tso cai rau lub cev loj hlob, thiab tseem hloov cov hlwb puas, cia lub cev kho nws tus kheej. Thaum lub sij hawm me nyuam mos somatic cell division tshwm sim sai dua, tab sis thaum koj loj hlob, 'mitosis' qeeb. Piav lub luag hauj lwm ntawm cell division nyob rau hauv yuav kho