Video: Vim li cas lub cell membrane yog cov kua dej mosaic qauv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov dej mosaic qauv piav txog cov cell membrane raws li ib tug tapestry ntawm ob peb hom molecules (phospholipids, cholesterols, thiab proteins) uas mus tas li. Qhov kev txav no pab cov cell membrane tuav nws lub luag hauj lwm raws li ib tug barrier ntawm sab hauv thiab sab nraum lub cell ib puag ncig.
Hauv qhov no, vim li cas lub cell membrane hu ua kua mosaic qauv?
Nws yog qee zaum hu ua a dej mosaic vim nws muaj ntau hom molecules uas ntab raws li lipids vim muaj ntau hom molecules uas ua rau cov lipids. cell membrane . Cov ua kua Ib feem yog cov lipid bilayer uas ntab raws li lipids vim muaj ntau hom molecules uas ua rau cell.
Tom qab ntawd, lo lus nug yog, dab tsi yog cov kua dej mosaic qauv thiab vim li cas nws tseem ceeb? Cov dej mosaic qauv yog siv los sawv cev cov qauv ntawm cov cell membrane. Cov proteins yog tseem ceeb vim tias lawv ua zoo li lub qhov rooj uas tso cai rau qee cov molecules nkag mus rau hauv lossis tawm ntawm lub cell. Lub cell membrane yog ib tug bilayer. Qhov no txhais tau hais tias muaj ob txheej sandwiched ua ke.
Yog li ntawd, dab tsi yog cov kua dej mosaic qauv ntawm cov cell membrane?
Cov dej mosaic qauv ntawm plasma daim nyias nyias : Cov dej mosaic qauv ntawm plasma daim nyias nyias piav txog lub plasma daim nyias nyias as a kua dej Kev sib xyaw ntawm phospholipids, cholesterol, thiab proteins. Qhov chaw hydrophilic lossis dej-hlub thaj chaw ntawm cov molecules yog nyob rau hauv kev sib cuag nrog cov aqueous kua dej ob sab hauv thiab sab nraud cell.
Dab tsi ua rau lub cell membrane kua dej?
Cell membrane yog kua dej vim hais tias ib tug neeg phospholipid molecules thiab cov proteins tau diffuse nyob rau hauv lawv cov monolayer thiab yog li txav mus los. Lub fluidity yog cuam tshuam los ntawm: qhov ntev ntawm fatty acid saw. Ntawm no, qhov luv ntawm cov saw hlau ntau dua kua dej yog cov daim nyias nyias.
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