Video: Yuav ua li cas yog tias lub membrane thauj protein tsis ua haujlwm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Active thauj feem ntau tshwm sim hla lub cell daim nyias nyias . Tsuas yog thaum lawv hla lub bilayer yog Lawv tuaj yeem txav cov molecules thiab ions hauv thiab tawm ntawm lub cell. Cov membrane proteins yog tshwj xeeb heev. Ib protein ntau uas txav cov piam thaj yuav tsis txav calcium (Ca) ions.
Ua raws li qhov xav tau, yuav ua li cas yog tias thauj cov proteins tsis ua haujlwm?
Kwv yees: Yog tus thauj cov protein uas nqa cov amino acids rau hauv lub cell nres ua haujlwm , yuav ua li cas cov txheej txheem cuam tshuam rau lub cell? Amino acids yuav tsim tsis tau cov proteins , thiab cov proteins xav tau los pab tswj cov kev ua ntawm tes, yog li tsis muaj cov amino acids, lub cell ua tau kaw thiab tuag.
Kuj Paub, yuav ua li cas yog tias lub cell membrane nres ua haujlwm? Yog cell membrane tsis tuaj yeem ua nws txoj haujlwm kom raug, qhov no tuaj yeem ua rau cell rau nres ua haujlwm kom raug. Yog ntau hlwb muaj phem cell daim nyias nyias , tus kab mob tuaj yeem cuam tshuam rau tag nrho lub cev lossis txawm tias tag nrho lub cev. Hauv ntau qhov no cell membrane kab mob, proteins nyob rau hauv lub cell membrane tsis thauj khoom kom raug.
Tib neeg kuj nug, dab tsi yog lub luag haujlwm ntawm lub membrane thauj cov proteins?
Kev ua haujlwm ntawm Thauj Proteins Tshwj xeeb tshaj yog, cov proteins channel pab cov molecules hla daim nyias nyias los ntawm kev thauj mus los tsis zoo, txheej txheem hu ua kom yooj yim diffusion. Cov channel proteins no yog lub luag haujlwm rau nqa cov ions thiab lwm cov molecules me rau hauv cell.
Yuav ua li cas thauj tsis xav tau membrane proteins?
Passive Thauj
Pom zoo:
Koj yuav ua li cas thiaj paub tias qhov sib npaug ua haujlwm lossis tsis yog?
Nws kuj yog ib qho yooj yim los txiav txim seb qhov sib npaug yog qhov ua haujlwm los ntawm kev daws rau y. Thaum koj muab ib qho kev sib npaug thiab tus nqi tshwj xeeb rau x, qhov yuav tsum tsuas yog ib qho sib txuas y-tus nqi rau qhov x-tus nqi.Txawm li cas los xij, y2 = x + 5 tsis yog qhov ua haujlwm; yog tias koj xav tias x = 4, ces y2 = 4 + 5 = 9
Yuav ua li cas feem ntau yuav tshwm sim yog tias cov ribosomes hauv lub cell tsis ua haujlwm?
Ribosomes yog organelles uas tsim cov proteins. Cells siv cov protein los ua cov haujlwm tseem ceeb xws li kho cov cellular puas thiab coj cov txheej txheem tshuaj. Yog tias tsis muaj cov ribosomes no, cov hlwb yuav tsis tuaj yeem tsim cov protein thiab yuav tsis tuaj yeem ua haujlwm zoo
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
Puas yog kev kho mob thauj mus los ua haujlwm lossis tsis ua haujlwm?
Kev yooj yim diffusion lossis uniport yog daim ntawv yooj yim tshaj plaws ntawm kev thauj mus los ntawm tus neeg nqa khoom nruab nrab thiab ua rau kev hloov pauv ntawm cov hydrophilic molecules loj thoob plaws lub cell membrane. Cotransport lossis symport yog ib hom kev thauj mus los thib ob
Lub zog rau kev thauj mus los ntawm qhov twg thiab vim li cas thiaj li xav tau lub zog rau kev thauj mus los?
Kev thauj mus los nquag yog txheej txheem uas yuav tsum tau txav cov molecules tawm tsam qhov concentration gradient. Cov txheej txheem yuav tsum muaj zog. Lub zog rau cov txheej txheem tau txais los ntawm kev rhuav tshem cov piam thaj siv oxygen hauv kev ua pa aerobic. ATP yog tsim thaum ua pa thiab tso tawm lub zog rau kev thauj mus los