Kev xaiv permeability yog dab tsi thiab vim li cas nws tseem ceeb rau cov hlwb?
Kev xaiv permeability yog dab tsi thiab vim li cas nws tseem ceeb rau cov hlwb?

Video: Kev xaiv permeability yog dab tsi thiab vim li cas nws tseem ceeb rau cov hlwb?

Video: Kev xaiv permeability yog dab tsi thiab vim li cas nws tseem ceeb rau cov hlwb?
Video: Cas yim laus es pheej yim nco.9/4/2018 2024, Kaum ib hlis
Anonim

Xaiv permeability yog ib yam khoom ntawm cellular daim nyias nyias uas tsuas tso cai rau qee cov molecules nkag los yog tawm ntawm cell . Qhov no yog tseem ceeb rau cov cell kom tswj hwm nws qhov kev txiav txim sab hauv tsis hais txog kev hloov pauv rau ib puag ncig.

Ib yam li ntawd ib tug yuav nug, vim li cas cov hlwb yuav tsum tau xaiv permeable?

Lub sij hawm, xaiv permeable , yog hais txog qhov tseeb tias daim nyias nyias tso cai rau qee yam tshuaj lossis molecules nkag mus rau hauv hlwb , thiab lwm yam kom tiv thaiv kom tsis txhob nkag. Xaiv permeable daim nyias nyias yog tseem ceeb hauv kev tswj hwm homeostasis, kua thiab electrolyte sib npaug, thiab kev noj qab haus huv ntawm tes.

Ib tug kuj tseem nug, vim li cas nws tseem ceeb rau lub cell los tswj cov molecules uas muaj peev xwm nkag mus rau hauv lossis tawm ntawm lub cell? Nws yog Ib qho tseem ceeb rau lub cell los tswj cov molecules uas muaj peev xwm nkag mus rau hauv lossis tawm ntawm lub cell vim ib co molecules los yog ions tuaj yeem ua rau puas tsuaj thiab yog li ua rau muaj kev phom sij rau daim nyias nyias.

Tsis tas li cov lus nug yog, vim li cas nws tseem ceeb rau cov hlwb kom muaj cov kab mob semipermeable?

Yog tias muaj, a semipermeable daim nyias nyias yog qhov tseem ceeb rau hlwb kom ciaj sia vim nws txhais tau hais tias qee cov molecules lossis ions tuaj yeem txav los ntawm lawv los ntawm cov txheej txheem sib txawv xws li. ntawm passive los yog yooj yim diffusion, los yog los ntawm active los yog passive thauj. Qhov tseem ceeb nws tso cai rau cov cell muaj peev xwm ua tau cov haujlwm tseem ceeb.

Vim li cas cov hlwb yuav tsum tswj hwm homeostasis?

Cellular homeostasis koom nrog kev tswj xyuas qhov sib npaug ntawm ntau yam uas ua rau a cell noj qab nyob zoo. Cov cell membrane yog ib qho lipid bilayer uas tiv thaiv qhov kev nkag ntawm dej thiab ions. Qhov no tso cai hlwb rau tswj ib tug ntau dua concentration ntawm sodium ions tawm sab nraum lub cell.

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