Video: Cov qauv thiab kev ua haujlwm ntawm plasma membrane yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub luag haujlwm tseem ceeb ntawm plasma membrane yog los tiv thaiv lub cell ntawm nws ib puag ncig. Tsim los ntawm phospholipid bilayer nrog embedded cov proteins plasma daim nyias nyias yog xaiv permeable rau ions thiab organic molecules thiab tswj lub kev txav mus los ntawm cov khoom hauv thiab tawm ntawm cov cell.
Ntawm no, tus qauv ntawm cov plasma membrane yog dab tsi?
Tag nrho cov hlwb yog surrounded los ntawm ib plasma daim nyias nyias . Cov daim nyias nyias yog tsim los ntawm phospholipid bilayer teem rov qab-rau-rov qab. Cov daim nyias nyias kuj tseem them rau hauv qhov chaw nrog cov roj cholesterol molecules thiab cov proteins. Cov plasma daim nyias nyias yog selectively permeable thiab tswj cov molecules uas tso cai rau nkag mus thiab tawm ntawm cell.
Tom qab, lo lus nug yog, dab tsi yog 4 lub luag haujlwm ntawm lub cell membrane? Muaj nuj nqi ntawm daim nyias nyias cov protein kuj tuaj yeem suav nrog cell – cell kev sib cuag, kev paub qhov chaw, kev sib cuag cytoskeleton, kev taw qhia, kev ua haujlwm enzymatic, lossis thauj cov khoom hla lub daim nyias nyias . Feem ntau daim nyias nyias cov protein yuav tsum tau muab tso rau hauv qee txoj hauv kev daim nyias nyias.
Hauv qhov no, tus qauv thiab kev ua haujlwm ntawm lub cell membrane yog dab tsi?
Cov cell membrane , tseem hu ua plasma daim nyias nyias , yog ob txheej ntawm lipids thiab cov proteins uas nyob ib puag ncig a cell thiab cais cov cytoplasm (cov ntsiab lus ntawm cov cell ) los ntawm nws ib puag ncig. Nws yog selectively permeable, uas txhais tau hais tias nws tsuas cia tej molecules nkag thiab tawm.
Lub luag haujlwm tseem ceeb ntawm plasma membrane yog dab tsi?
Cov qauv ntawm Plasma Membranes Lub luag haujlwm tseem ceeb ntawm plasma membrane yog los tiv thaiv lub cell ntawm nws ib puag ncig. Tsim los ntawm phospholipid bilayer nrog embedded cov proteins , plasma membrane yog xaiv permeable rau ions thiab organic molecules thiab tswj kev txav ntawm cov khoom hauv thiab tawm ntawm cov hlwb.
Pom zoo:
Kev sib raug zoo ntawm cov qauv thiab kev ua haujlwm yog dab tsi?
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