Yuav ua li cas yog cov carrier proteins uas pab kom yooj yim diffusion?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Channel cov proteins , ua tsaug channel cov proteins , thiab carrier proteins yog peb hom thauj cov protein uas koom nrog yooj yim diffusion . Ib channel protein ntau , ib hom thauj protein , 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.

Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog lub luag hauj lwm ntawm carrier proteins nyob rau hauv yooj yim diffusion?

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.

Ib yam li ntawd, cov tshuaj twg siv cov khoom siv thauj khoom los hla cov plasma membrane los ntawm kev yooj yim diffusion? Txawm hais tias cov piam thaj tuaj yeem muaj ntau dua sab nraud ntawm lub cell, nws ua tsis tau ntoo khaub lig Lub lipid bilayer ntawm yooj yim nthuav tawm vim nws yog ob qho loj thiab polar. Txhawm rau daws qhov no, ib qho tshwj xeeb carrier protein hu ua glucose thauj yuav hloov cov piam thaj molecules rau hauv lub cell mus rau pab txhawb nws sab hauv nthuav tawm.

Tom qab ntawd, lo lus nug yog, 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.

Dab tsi siv tau yooj yim diffusion?

Nyob rau hauv lub cell, piv txwv ntawm molecules uas yuav tsum tau siv yooj yim diffusion mus rau hauv thiab tawm ntawm lub cell membrane yog qabzib, sodium ions, thiab poov tshuaj ions. Lawv dhau los ntawm kev siv cov khoom thauj cov protein los ntawm cov cell membrane yam tsis muaj zog raws li cov concentration gradient.