Video: Puas yooj yim diffusion siv cov protein raws?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev Pom Zoo: Yooj yim Diffusion Cov neeg nqa khoom
Muaj ob hom yooj yim diffusion cov neeg nqa khoom: Channel cov protein thauj tsuas yog dej lossis qee yam ions. Lawv ua yog li los ntawm kev tsim ib protein ntau -lined passageway hla lub membrane. Ntau cov dej molecules los yog ions tuaj yeem hla hauv ib cov ntaub ntawv los ntawm xws li cov channel ntawm tus nqi ceev heev.
Ib yam li ntawd, nws raug nug, puas yog cov proteins uas muaj feem cuam tshuam rau kev nthuav dav?
Channel cov protein , ua gated channel cov protein , thiab carrier cov proteins yog peb hom kev thauj mus los cov proteins uas yog koom nrog hauv kev yooj yim diffusion . Dej channel proteins (aquaporins) tso cai rau cov dej ntws mus rau hauv daim nyias nyias ntawm tus nqi nrawm heev. Ion channel proteins tso cai rau ions diffuse hla lub membrane.
Tsis tas li ntawd, puas yog cov dej xau tau yooj yim diffusion? Lwm cov ntaub ntawv, ib yam nkaus, tuaj yeem cuam tshuam los ntawm cov protein cov channel tsis muaj cov cab kuj - potassium xau channel , piv txwv. Diffusion tsis raug txhais raws li kev thauj mus los passive. Yooj yim nthuav tawm tsis yog thauj txhua. Yooj yim diffusion yog carrier-mediated thauj.
Qhov thib ob, hom protein twg uas pab txhawb kev siv tshuaj?
channel cov protein
Puas yog cov protein xav tau rau kev yooj yim diffusion?
Tsuas yog me me, tsis muaj polar molecules, xws li oxygen thiab carbon dioxide, tuaj yeem nthuav tau yooj yim hla daim nyias nyias. Yog li ntawd, tsis muaj cov molecules nonpolar raug thauj los ntawm cov proteins nyob rau hauv daim ntawv ntawm transmembrane channels. Cov metabolites tsis hloov vim tsis muaj zog xav tau kom yooj yim diffusion.
Pom zoo:
Dab tsi yog qhov txawv ntawm osmosis diffusion thiab yooj yim diffusion?
Osmosis kuj tshwm sim thaum dej txav ntawm ib lub cell mus rau lwm qhov. Kev yooj yim diffusion ntawm qhov tod tes tshwm sim thaum qhov nruab nrab nyob ib puag ncig ntawm lub cell yog nyob rau hauv siab concentration ntawm ions los yog molecules tshaj qhov chaw nyob rau hauv lub cell. Cov molecules txav los ntawm ib puag ncig nruab nrab mus rau hauv lub cell vim diffusion gradient
Puas yog yooj yim diffusion passive thauj?
Facilitated diffusion (tseem hu ua kev thauj mus los yooj yim lossis kev thauj mus los tsis tu ncua) yog cov txheej txheem ntawm kev thauj mus los tsis tu ncua (raws li tsis yog kev thauj mus los) ntawm cov molecules lossis ions hla ib daim nyias nyias ntawm cov protein tshwj xeeb transmembrane
Puas yooj yim diffusion siv cov proteins channel?
Saib ze ze: Cov neeg nqa khoom yooj yim Diffusion Muaj ob hom kev sib koom ua ke ntawm cov neeg nqa khoom yooj yim: Channel proteins thauj tsuas yog dej lossis qee yam ions. Lawv ua li ntawd los ntawm kev tsim cov protein-lined passageway hla daim nyias nyias. Ntau cov dej molecules lossis ions tuaj yeem hla hauv ib cov ntaub ntawv los ntawm cov channel ntawm tus nqi nrawm heev
Puas yooj yim diffusion xav tau lub zog?
A. Yooj yim diffusion tsis xav tau lub zog: yooj yim diffusion yuav tsum muaj qhov chaw ntawm ATP. Yooj yim diffusion tuaj yeem txav cov khoom txav mus rau qhov kev taw qhia ntawm qhov concentration gradient; yooj yim diffusion txav cov ntaub ntawv nrog thiab tawm tsam ib tug concentration gradient
Dab tsi cov cab kuj muaj protein pab hauv kev yooj yim diffusion?
Channel proteins, gated channel proteins, thiab carrier proteins yog peb hom thauj cov proteins uas koom nrog hauv kev yooj yim diffusion. Cov protein channel, ib hom thauj protein, ua zoo li lub pore hauv daim nyias nyias uas cia cov dej molecules los yog cov ions me me dhau los sai