Video: Cov protein puas tuaj yeem txav mus rau hauv cov cell membrane?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum lub lipid bilayer muab cov qauv rau lub cell membrane , membrane proteins tso cai rau ntau qhov kev sib tshuam uas tshwm sim ntawm hlwb . Raws li peb tau tham hauv tshooj dhau los, membrane proteins yog dawb rau txav nyob rau hauv lub lipid bilayer vim nws fluidity.
Yog li, yuav ua li cas cov protein txav hauv daim nyias nyias?
Kev thauj mus los proteins txav molecules thiab ions nyob rau hauv daim nyias nyias . Lawv ua tau yuav categorized raws li rau Transporter Classification database. Membrane enzymes yuav muaj ntau yam dej num, xws li oxidoreductase, transferase lossis hydrolase. Cell adhesion molecules tso cai rau cov cell rau txheeb xyuas ib leeg thiab sib tham.
Tsis tas li ntawd, nyob qhov twg cov proteins pom nyob rau hauv lub cell membrane? Peripheral membrane proteins yog pom nyob rau sab nraud thiab sab hauv ntawm daim nyias nyias , txuas nrog rau ib qho cov proteins los yog phospholipids. Tsis zoo li ib qho membrane proteins , peripheral membrane proteins tsis txhob lo rau hauv cov tub ntxhais hydrophobic ntawm lub daim nyias nyias , thiab lawv zoo li yuav ua tau yooj yim dua.
Ib yam li ntawd, nws tau nug, dab tsi yog 3 cov proteins hauv cell membrane?
Raws li lawv cov qauv, muaj lub ntsiab peb hom ntawm membrane proteins : thawj tus yog integral daim nyias nyias protein uas yog nyob mus ib txhis anchored los yog ib feem ntawm lub daim nyias nyias , hom thib ob yog peripheral daim nyias nyias protein uas tsuas yog txuas rau ib ntus rau lipid bilayer lossis rau lwm qhov sib xyaw cov proteins , thiab peb
Dab tsi yog cov haujlwm ntawm cov protein hauv cov cell membrane?
Membrane proteins tuaj yeem ua haujlwm ua enzymes kom ceev cov tshuaj tiv thaiv, ua raws li cov receptors rau cov molecules tshwj xeeb, lossis thauj cov ntaub ntawv hla lub cell membrane. Carbohydrates, los yog suab thaj, qee zaum pom txuas nrog cov proteins lossis lipids sab nraud ntawm lub cell membrane.
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
Dab tsi yog lub zog uas tuaj yeem tshwm sim ntawm qhov chaw ua si los ua kom cov khoom pib txav mus los?
Kev sib txhuam. Thaum lub ntiajteb txawj nqus yog ib qho tseem ceeb ntawm physics rau qhov chaw ua si swb, kev sib txhuam yog qhov tseem ceeb sib npaug. Kev sib txhuam ua haujlwm tiv thaiv lub ntiajteb txawj nqus kom qeeb tus neeg qhovntsej thiaj tsis mob ntawm tus swb. Kev sib txhuam yog ib qho quab yuam uas tshwm sim thaum twg ob yam khoom rub tawm rau ib leeg, xws li swb thiab ib tus neeg lub nraub qaum
Koj puas tuaj yeem ua kom cov khoom ntawm tej yam tsis txav mus los?
Cov khoom tsis tuaj yeem txav mus los ntawm txhua qhov. Cov hais, txawm li cas los xij, tseem nyob hauv kev txav mus los. Cov khoom hauv cov khib nyiab yeej ib txwm vibrating (tsav rov qab thiab tawm) nyob rau hauv qhov chaw. Lub vibrational txav ntawm cov khoom hauv cov khoom yog kinetic zog
Vim li cas lub caij nplooj ntoos hlav ncab hauv koj qhov kev sim thaum cov khoom txav mus rau hauv txoj kev ncig?
Feem ntau, cov khoom txav mus rau hauv txoj kev ncig vim lub caij nplooj ntoos hlav yog lub zog ntawm cov khoom mus rau qhov chaw ntawm txoj kev ncig. Muaj kev tsis sib haum xeeb ntawm lub zog no thiab cov khoom inertia. Yog li ntawd lub caij nplooj ntoos hlav stretches tawm vim hais tias ntawm cov khoom tangential ceev thiab inertia?
Cov tshuaj dab tsi tuaj yeem txav mus rau hauv lossis tawm ntawm cov hlwb los ntawm kev nthuav tawm?
Dej, carbon dioxide, thiab oxygen yog ib qho ntawm ob peb yam yooj yim molecules uas muaj peev xwm hla lub cell membrane los ntawm diffusion (los yog ib hom diffusion hu ua osmosis). Diffusion yog ib txoj hauv kev ntawm kev txav ntawm cov khoom nyob rau hauv cov hlwb, nrog rau txoj kev rau cov me me molecules tseem ceeb hla lub cell membrane