Video: Thaum cov molecules txav mus rau lawv cov concentration gradient?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Concentration gradients . A concentration gradient tshwm sim thaum lub concentration ntawm cov khoom yog siab dua hauv ib cheeb tsam dua lwm qhov. Nyob rau hauv passive thauj, cov khoom yuav diffuse nqes a concentration gradient , los ntawm thaj chaw siab dua concentration mus rau thaj chaw qis dua concentration , kom txog thaum lawv sib npaug spaced.
Ua qhov no hauv kev xav, thaum molecules txav mus rau hauv lawv cov concentration gradient nws hu ua?
( Thaum molecules txav ua li no, lawv hais rau txav mus rau lawv cov concentration gradient .) Peb hom kev thauj mus los muaj xws li yooj yim diffusion, osmosis, thiab yooj yim diffusion. Yooj yim Diffusion yog qhov txav ntawm cov khoom los ntawm thaj chaw siab dua concentration mus rau thaj tsam ntawm qis dua concentration.
Ib yam li ntawd, vim li cas cov molecules txav ntawm qhov siab mus rau qis concentration? Diffusion yog ib tug spontaneous txav ntawm hais los ntawm ib cheeb tsam ntawm siab concentration mus rau ib cheeb tsam ntawm qis concentration . Nws tshwm sim thaum qhov nruab nrab nyob ib puag ncig ntawm tes muaj dej ntau dua concentration tshaj lub cell. Lub cell nce dej nrog rau qhov tseem ceeb molecules thiab hais rau kev loj hlob.
Kuj paub, thaum molecules txav mus rau lawv cov concentration?
Yooj Yim Diffusion Ib qho piv txwv ntawm kev thauj mus los tsis zoo yog diffusion, thaum molecules txav los ntawm thaj chaw siab concentration (loj ntau) mus rau thaj tsam qis concentration (tus nqi qis). Molecules yog hais tias ntuj ntws down lawv concentration gradient. Hom diffusion no tshwm sim yam tsis muaj lub zog nkag.
Cov txheej txheem dab tsi tuaj yeem txav ib qho kev daws teeb meem tawm tsam nws cov concentration gradient?
Kev thauj mus los
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