Dab tsi cov cab kuj muaj protein pab hauv kev yooj yim diffusion?
Dab tsi cov cab kuj muaj protein pab hauv kev yooj yim diffusion?

Video: Dab tsi cov cab kuj muaj protein pab hauv kev yooj yim diffusion?

Video: Dab tsi cov cab kuj muaj protein pab hauv kev yooj yim diffusion?
Video: Qhia cov poj niam thaum muaj me nyuam hauv plab tsim nyog ua li ca thiaj zoo 2024, Kaum ib hlis
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Channel cov proteins , ua tsaug channel cov proteins , thiab carrier proteins yog peb hom kev thauj mus los cov proteins uas koom nrog yooj yim diffusion . Ib channel protein ntau , ib hom kev thauj mus los protein ntau , ua zoo li lub pore nyob rau hauv daim nyias nyias uas cia cov dej molecules los yog me me ions los ntawm sai sai.

Raws li txoj cai, lub luag hauj lwm ntawm cov cab kuj proteins nyob rau hauv yooj yim diffusion yog dab tsi?

Muaj nuj nqi . Cov carrier proteins pab txhawb nthuav tawm ntawm cov molecules hla lub cell membrane. Cov protein ntau yog imbedded nyob rau hauv lub cell membrane thiab npog tag nrho cov membrane. Qhov no yog qhov tseem ceeb vim qhov tus cab kuj yuav tsum thauj cov molecule nyob rau hauv thiab tawm ntawm lub cell.

Qhov thib ob, dab tsi molecules siv yooj yim diffusion? Facilitated diffusion yog li tso cai rau polar thiab them cov molecules, xws li carbohydrates , amino acids , nucleosides , thiab ions, hla lub ntshav ntshav daim nyias nyias. Ob chav kawm ntawm cov proteins uas kho kom yooj yim diffusion yog feem ntau distinguished: carrier proteins thiab channel cov proteins.

Ib yam li ntawd, tej zaum koj yuav nug, puas yog qhov yooj yim diffusion siv cov channel lossis cov khoom thauj khoom?

Ib qho Closer Saib: Yooj yim Diffusion Carriers Muaj ob hom yooj yim diffusion nqa : 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.

Carrier proteins thauj dab tsi?

Carrier proteins yog cov proteins koom nrog hauv kev txav ntawm ions, me me molecules, lossis macromolecules, xws li lwm yam protein ntau , hla ib daim nyias nyias. Carrier proteins yog ib daim nyias nyias cov proteins ; uas yog, lawv muaj nyob rau hauv thiab nthuav lub membrane hla uas lawv thauj tshuaj.

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