Video: Yuav ua li cas sib txawv ntawm cov molecules dhau los ntawm daim nyias nyias?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov ntshav ntshav daim nyias nyias yog selectively permeable; hydrophobic molecules thiab me polar molecules tau diffuse dhau ntawm lipid txheej, tab sis ions thiab loj polar molecules ua tsis tau. Kev tsis sib xws daim nyias nyias proteins pab ions thiab polar loj molecules kom dhau los ntawm daim nyias nyias los ntawm passive lossis active thauj.
Yog li ntawd, dab tsi molecules tau yooj yim dhau los ntawm daim nyias nyias?
Cov qauv ntawm lipid bilayer tso cai rau me me, tsis muaj cov khoom siv xws li oxygen thiab carbon dioxide, thiab hydrophobic. molecules xws li lipids, rau hla dhau lub cell daim nyias nyias , down lawv concentration gradient, los ntawm yooj yim diffusion.
Ib yam li ntawd, cov molecules dab tsi tuaj yeem dhau los ntawm semipermeable membrane? Dej dhau los ntawm semipermeable membrane ntawm osmosis. Molecules ntawm oxygen thiab carbon dioxide dhau los ntawm daim nyias nyias ntawm diffusion. Txawm li cas los xij, polar molecules tsis tuaj yeem yooj yim dhau los ntawm lipid bilayer.
Tsis tas li ntawd paub yog, hom molecules uas qhia tau txav mus los ntawm daim nyias nyias?
Me polar thiab nonpolar molecules.
Dab tsi yog 3 hom kev thauj mus los membrane?
Muaj peb yam tseem ceeb ntawm kev thauj mus los passive - Diffusion, Osmosis thiab Yooj yim Diffusion.
Pom zoo:
Puas yog nws muaj tseeb tias nyob rau hauv kev thauj mus los ntawm kev txav ntawm cov khoom hla ib daim nyias nyias yuav tsum muaj zog?
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Puas yog glycerol xav tau daim nyias nyias nyias kom hla daim nyias nyias?
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