Video: Dab tsi molecules siv passive thauj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsis yog txhua yam nkag mus rau hauv lub cell los ntawm passive thauj.
Tsuas yog qhov tsawg tshaj plaws molecules zoo li dej, carbon dioxide, thiab oxygen tuaj yeem tawg mus rau hauv cov ntaub so ntswg ntawm tes. Loj dua molecules los yog them molecules feem ntau xav tau ib lub zog nkag mus rau hauv lub cell.
Ib yam li ntawd, tej zaum koj yuav nug, hom molecules uas txav los ntawm passive thauj?
Kev txav ntawm cov molecules hla ib daim nyias nyias uas tsis muaj lub zog nkag mus yog hu ua passive thauj. Thaum muaj zog ( ATP ) xav tau, lub zog yog hu ua active thauj. Active thauj txav molecules tawm tsam lawv concentration gradient , los ntawm ib cheeb tsam ntawm tsawg concentration mus rau ib cheeb tsam ntawm high concentration.
Tsis tas li ntawd, dab tsi mus dhau kev thauj mus los passive? Passive thauj yog ib qho kev txav ntawm ions thiab lwm yam atomic lossis molecular tshuaj hla cell membranes tsis xav tau lub zog nkag. Plaub yam tseem ceeb ntawm passive thauj yog yooj yim diffusion, yooj yim diffusion, pom, thiab / los yog osmosis.
Xav txog qhov no, dab tsi molecules siv kev thauj mus los?
Active thauj feem ntau yog txuam nrog accumulating siab concentrations ntawm molecules uas lub cell xav tau, xws li ions, qabzib thiab amino acids. Piv txwv ntawm kev thauj mus los muaj xws li kev nce qib ntawm cov piam thaj hauv cov hnyuv hauv tib neeg thiab nce cov ntxhia ions rau hauv cov plaub hau hauv paus. hlwb ntawm cov nroj tsuag.
Dab tsi molecules siv yooj yim diffusion?
Yooj yim diffusion yog li tso cai polar thiab them molecules , xws li carbohydrates, amino acids, nucleosides, thiab ions, hla lub plasma membrane. Ob chav kawm ntawm cov proteins uas kho kom haum xeeb yooj yim diffusion Feem ntau txawv: carrier proteins thiab channel proteins.
Pom zoo:
Puas yog yooj yim diffusion passive thauj?
Facilitated diffusion (tseem hu ua kev thauj mus los yooj yim lossis kev thauj mus los tsis tu ncua) yog cov txheej txheem ntawm kev thauj mus los tsis tu ncua (raws li tsis yog kev thauj mus los) ntawm cov molecules lossis ions hla ib daim nyias nyias ntawm cov protein tshwj xeeb transmembrane
Yuav ua li cas diffusion cuam tshuam nrog kev thauj mus los passive?
Passive Transport: Yooj Yim Diffusion Diffusion hla lub cell membrane yog ib hom kev thauj mus los tsis zoo, lossis thauj hla cov cell membrane uas tsis xav tau lub zog. Cov molecules uas yog hydrophobic, ib yam li thaj tsam hydrophobic, tuaj yeem dhau los ntawm cov cell membrane los ntawm qhov yooj yim diffusion
Yuav ua li cas molecules txav hla lub membrane nyob rau hauv passive thauj?
Kev txav ntawm cov molecules hla ib daim nyias nyias uas tsis muaj lub zog nkag mus yog hu ua passive thauj. Thaum lub zog (ATP) xav tau, lub zog yog hu ua kev thauj mus los. Active thauj txav molecules tawm tsam lawv cov concentration gradient, los ntawm ib cheeb tsam ntawm tsawg concentration mus rau ib qho chaw siab concentration
Dab tsi yog qhov sib npaug siv los xam tag nrho cov khoom siv hluav taws xob siv?
Cov mis uas txuas lub zog thiab lub zog yog: Zog = Lub Zog x Sijhawm. Chav tsev ntawm lub zog yog joule, lub zog ntawm lub zog yog watt, thiab chav tsev ntawm lub sijhawm yog qhov 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