Video: Lub luag haujlwm ntawm daim nyias nyias thauj proteins yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thauj cov proteins ua qhov rooj rau lub cell , pab qee cov molecules hla rov qab mus rau hauv cov plasma membrane, uas nyob ib puag ncig txhua tus neeg nyob cell . Nyob rau hauv passive thauj molecules txav los ntawm ib cheeb tsam ntawm siab concentration mus rau qhov chaw uas tsis muaj concentration.
Tsis tas li ntawd, cov proteins thauj khoom siv rau dab tsi?
A thauj protein (ntau lub npe hu ua lub twj tso kua mis transmembrane, transporter, escort protein ntau , kua qaub thauj protein , cation thauj protein , los yog anion thauj protein ) yog a protein ntau uas ua haujlwm ntawm kev txav mus rau lwm yam khoom hauv lub cev.
Ib tug kuj yuav nug, dab tsi yog peb lub luag haujlwm ntawm membrane proteins? Membrane proteins tuaj yeem ua haujlwm ntau yam ntawm tus yuam sij muaj nuj nqi : Junctions – Pab kom txuas thiab koom ob lub hlwb ua ke. Enzymes - Kho rau daim nyias nyias localises metabolic txoj kev. Tsheb thauj mus los - Lub luag haujlwm rau kev nthuav dav thiab kev thauj mus los.
Ib yam li ntawd, koj tuaj yeem nug, dab tsi yog hom kev thauj cov protein sib txawv?
thauj cov protein feem ntau ua ob hom kev thauj mus los : “facilitated diffusion,” qhov twg a thauj protein tsuas yog tsim kom muaj qhov qhib rau cov khoom kom diffuse cia nws cov concentration gradient; thiab “active thauj ,” qhov twg lub cell siv lub zog thiaj li txav tau cov khoom tawm tsam nws cov concentration gradient.
Peb hom thauj proteins yog dab tsi?
Channel cov proteins , ua tsaug channel cov proteins , thiab carrier cov proteins yog peb hom thauj proteins uas koom nrog hauv kev yooj yim diffusion. Ib channel protein ntau , a 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.
Pom zoo:
Puas yog nws muaj tseeb tias nyob rau hauv kev thauj mus los ntawm kev txav ntawm cov khoom hla ib daim nyias nyias yuav tsum muaj zog?
Hauv kev thauj mus los passive, kev txav ntawm cov khoom hla ib daim nyias nyias yuav tsum muaj zog. _ Muaj tseeb_ 5. Endocytosis yog ib txoj kev uas ib lub cell membrane nyob ib puag ncig thiab siv cov khoom los ntawm ib puag ncig. Ib daim nyias nyias uas tso cai rau qee cov ntaub ntawv dhau los qhia txog kev xaiv permeability
Lub luag haujlwm ntawm CDK yog dab tsi hauv lub cev ua haujlwm ntawm tes tshwj xeeb hauv lub voj voog ntawm tes?
Los ntawm phosphorylation, Cdks teeb liab lub xov tooj ntawm tes uas nws tau npaj kom dhau mus rau theem tom ntej ntawm lub voj voog ntawm tes. Raws li lawv lub npe qhia, Cyclin-Dependent Protein Kinases yog nyob ntawm cyclins, lwm chav kawm ntawm kev tswj hwm cov protein. Cyclins khi rau Cdks, ua kom cov Cdks rau phosphorylate lwm cov molecules
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Glycerol yog lipid soluble yog li nws diffuses los ntawm yooj yim diffusion ncaj qha los ntawm lub cell membrane thaum cov piam thaj yog ib tug polar molecule yog li nws diffuses los ntawm kev yooj yim diffusion uas txhais tau hais tias nws xav tau ib tug channel protein ua hauj lwm thiab qhov no txhais tau tias thaj chaw saum npoo rau cov piam thaj kom nkag mus yog tsawg dua. tshaj ib qho rau glycerol
Yuav ua li cas yog lub hom phiaj ntawm carrier proteins nyob rau hauv daim nyias nyias?
Muaj nuj nqi. Cov cab kuj muaj protein ntau pab txhawb kev nthuav tawm ntawm cov molecules hla lub cell membrane. Cov protein yog imbedded nyob rau hauv lub cell membrane thiab npog tag nrho cov membrane. Qhov no yog qhov tseem ceeb vim tias tus neeg nqa khoom yuav tsum thauj cov molecule hauv thiab tawm ntawm lub cell
Lub luag haujlwm ntawm lub cell membrane yog dab tsi thaum lub sijhawm thauj mus los?
Lub cell membrane yog xaiv permeable rau ions thiab organic molecules thiab tswj kev txav ntawm cov khoom hauv thiab tawm ntawm lub hlwb. Lub luag haujlwm tseem ceeb ntawm cov cell membrane yog los tiv thaiv lub cell ntawm nws ib puag ncig. Nws muaj phospholipid bilayer nrog embedded proteins