Video: Puas yog kev kho mob thauj mus los ua haujlwm lossis tsis ua haujlwm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yooj yim diffusion los yog uniport yog qhov yooj yim tshaj plaws ntawm passive carrier-mediated thauj thiab ua rau kev hloov ntawm hydrophilic molecules loj nyob rau hauv lub cell membrane. Cotransport lossis symport yog ib hom kev thauj mus los thib ob.
Tom qab ntawd, ib tus tuaj yeem nug, puas yog kev thauj khoom loj lossis tsis ua haujlwm?
Zoo li cov txheej txheem thauj khoom nquag uas txav ions thiab cov molecules me ntawm cov khoom thauj khoom thauj, kev thauj khoom loj yog qhov xav tau lub zog (thiab, qhov tseeb, lub zog siv zog) txheej txheem. Ntawm no, peb yuav saib ntau hom kev thauj khoom loj: phagocytosis , pinocytosis, receptor-mediated endocytosis thiab exocytosis.
Peb hom kev thauj mus los nruab nrab yog dab tsi? Muaj peb hom ntawm nruab nrab thauj : uniport, symport, thiab antiport. Tej yam uas yuav ua tau thauj yog cov as-ham, ions, qabzib, thiab lwm yam, txhua yam nyob ntawm qhov xav tau ntawm cov cell.
Ib yam li ntawd, puas yog diffusion nquag lossis passive?
Cov txheej txheem no hu ua passive thauj los yog yooj yim diffusion , thiab tsis xav tau lub zog. Lub solute tuaj yeem txav mus "nce toj," los ntawm thaj chaw qis dua mus rau siab dua. Cov txheej txheem no hu ua kev thauj mus los , thiab yuav tsum muaj qee hom tshuaj muaj zog.
Puas yog osmosis passive lossis active?
osmosis yog cov txheej txheem uas cov dej molecules txav los ntawm ib cheeb tsam ntawm cov dej muaj peev xwm ntau dua mus rau thaj tsam ntawm qhov muaj peev xwm qis qis hauv cov dej muaj peev xwm gradient hla ib feem permeable membrane, yog li lub zog me me yuav tsum tau ua kom tiav cov txheej txheem no, yog li nws yog ib daim ntawv lossis passive thauj.
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
Vim li cas thiaj yooj yim diffusion tsis yog hom kev thauj mus los?
Qhov sib txawv no yog tias kev thauj mus los xav tau lub zog, thaum uas yooj yim diffusion tsis xav tau lub zog. Lub zog uas nquag thauj siv yog ATP (adenosine triphosphate). Lub zog xav tau nyob rau hauv daim ntawv no ntawm kev thauj mus los vim hais tias cov khoom yuav tawm tsam cov concentration gradient
Yog vim li cas sodium poov tshuaj twj tso kua mis suav hais tias yog ib qho kev thauj mus los uas cov kev taw qhia yog cov sodium thiab poov tshuaj tau pumped?
Sodium-Potassium Pump. Kev thauj mus los yog lub zog xav tau cov txheej txheem ntawm kev siv cov molecules thiab ions hla daim nyias nyias 'nce toj' - tiv thaiv kev sib tw gradient. Txhawm rau txav cov molecules tawm tsam lawv cov concentration gradient, yuav tsum muaj cov khoom siv protein
Kev xaiv ntuj yog dab tsi thiab nws cuam tshuam li cas ntawm qhovntsej thiaj tsis mob nrog kev hloov kho?
Qhovntsej thiaj tsis mob nrog kev hloov kho yog lub evolutionary mechanism uas tsim cov kev hloov hauv cov caj ces ntawm cov kab mob nyob. Muaj peb lub tswv yim rau cov kev hloov pauv no thiab lub tshuab thib plaub, kev xaiv ntuj tsim, txiav txim siab cov xeeb leej xeeb ntxwv uas muaj sia nyob kom dhau ntawm lawv cov noob, raws li ib puag ncig
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