Video: Puas yooj yim diffusion siv cov proteins channel?
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.
Tom qab ntawd, ib tug kuj yuav nug, hom protein twg yog siv los pab kom yooj yim diffusion?
channel cov protein
Dab tsi dhau los ntawm cov proteins channel? Ntau cov molecules them, uas yog hydrophilic, muaj lub sijhawm nyuaj hla dhau daim nyias nyias. Cov no suav nrog ions, dej, thiab suab thaj xws li qabzib. Channel cov protein nqa tawm feem ntau ntawm kev yooj yim diffusion. Cov cab kuj cov proteins ua haujlwm tsis muaj zog, thiab txav cov molecules cia lawv cov concentration gradient.
Hais txog qhov no, puas yog ion channel yooj yim diffusion?
Yooj yim diffusion ntawm ions Nws tshwm sim los ntawm cov proteins, los yog sib sau ua ke ntawm cov proteins, embedded nyob rau hauv lub plasma membrane. Cov proteins transmembrane no tsim cov dej puv channel los ntawm qhov uas ion tuaj yeem dhau nws cov concentration gradient. Qee hom gated ion channels : ligand-gated.
Yuav ua li cas cov carrier proteins ua hauj lwm nyob rau hauv yooj yim diffusion?
Carrier proteins yog membrane embedded cov proteins uas tso cai rau kev nkag ntawm cov molecules los yog ions hla ib daim nyias nyias, cia cov molecular lossis ionic concentration gradient (hauv lwm lo lus, ntawm yooj yim diffusion ). Carrier proteins kuj muaj cov chaw tshwj xeeb uas qhib thaum lub substrate khi rau lawv.
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 yooj yim diffusion siv cov protein raws?
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 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 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
Yuav ua li cas yog cov carrier proteins uas pab kom 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