Video: Vim li cas kev thauj mus los tseem ceeb rau tib neeg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Teb thiab piav qhia: Kev thauj mus los yog tseem ceeb vim nws tso cai rau lub cell txav cov tshuaj tiv thaiv cov concentration gradient.
Tom qab ntawd, ib tug kuj yuav nug, yuav ua li cas tshwm sim tsis muaj kev thauj mus los?
Kuv nyob rau hauv lub tswv yim hais tias yog ib tug cell tsis muaj kev thauj mus los , nws yog yuav poob molecules los ntawm daim nyias nyias thiab tsis muaj peev xwm tswj tau qhov zoo gradient, los yog molecules yuav raug kaw hauv daim nyias nyias (khoom pov tseg) lossis sab nraum daim nyias nyias (khoom noj).
Qhov thib ob, vim li cas nws tseem ceeb kom muaj kev thauj mus los ua haujlwm thiab tsis muaj zog? - Active thiab Passive thauj yog tseem ceeb rau cov cell vim nws tswj tau dab tsi nkag mus thiab tawm ntawm lub cell. Cov thauj ntawm cov ntaub ntawv mus thiab fro yog tswj los ntawm permeable cell membrane. Qhov no txhais tau hais tias nws yuav tso cai rau qee cov ntaub ntawv, tab sis lwm tus yuav tsum siv cov txheej txheem rau tau hla.
Tom qab ntawd, ib tus tuaj yeem nug, vim li cas kev thauj mus los tseem ceeb rau tib neeg cov piam thaj?
Kev thauj mus los yog ib txoj kev uas yuav tsum tau txav molecules tawm tsam ib tug concentration gradient. Cov txheej txheem yuav tsum muaj zog. Cov qabzib molecules nyob rau hauv txoj hnyuv tej zaum yuav nyob rau hauv ib tug ntau dua concentration tshaj nyob rau hauv cov hnyuv hlwb thiab cov ntshav - piv txwv li, tom qab noj mov qab zib.
Qhov twg yog active thauj siv nyob rau hauv lub cev?
Vim hais tias lub zog yuav tsum tau nyob rau hauv cov txheej txheem no, nws yog hu ua ' nquag ' thauj . Piv txwv ntawm kev thauj mus los suav nrog kev thauj mus los ntawm sodium tawm ntawm cell thiab poov tshuaj rau hauv lub cev cell los ntawm sodium-potassium twj tso kua mis. Kev thauj mus los feem ntau tshwm sim nyob rau hauv sab hauv ntawm txoj hnyuv me.
Pom zoo:
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