Video: Dab tsi yog qhov txawv ntawm osmosis diffusion thiab yooj yim diffusion?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Osmosis kuj tshwm sim thaum dej txav ntawm ib lub cell mus rau lwm qhov. Yooj yim diffusion ntawm qhov tod tes, tshwm sim thaum qhov nruab nrab nyob ib puag ncig ntawm lub cell yog nyob rau hauv siab concentration ntawm ions los yog molecules tshaj qhov chaw nyob rau hauv lub cell. Cov molecules txav los ntawm ib puag ncig nruab nrab mus rau hauv lub cell vim nthuav tawm gradient.
Dhau li ntawm qhov no, puas yog osmosis hom diffusion lossis yooj yim diffusion?
Facilitated diffusion yog diffusion siv cov cab kuj los yog channel proteins hauv cell daim nyias nyias uas pab nyob rau hauv lub zog ntawm molecules nyob rau hauv ib tug concentration gradient. Qhov thib peb hom ntawm kev txav yog hu ua osmosis, los yog kev txav ntawm cov dej kom sib npaug ntawm cov kua dej.
Ib yam li ntawd, qhov txawv ntawm qhov yooj yim diffusion thiab kev thauj mus los yog dab tsi? Lub hom phiaj tseem ceeb yog txav cov khoom hla lub cell membrane. Muaj ib lub ntsiab Qhov sib txawv ntawm qhov yooj yim diffusion thiab nquag thauj . Qhov no txawv yog tias kev thauj mus los xav tau lub zog, thaum yooj yim diffusion tsis xav tau lub zog.
Tom qab ntawd, yuav ua li cas yooj yim diffusion zoo ib yam li yooj yim diffusion?
Yooj yim diffusion tsis xav tau lub zog los ntawm ATP. Yooj yim diffusion tej zaum yuav los yog tsis xav tau lub zog los ntawm ATP. Hauv yooj yim diffusion , cov molecules tuaj yeem hla tsuas yog nyob rau hauv cov kev taw qhia ntawm concentration gradient. Hauv yooj yim diffusion , cov molecules tuaj yeem dhau ob qho tib si nyob rau hauv kev coj thiab rov qab ntawm cov concentration gradient.
Dab tsi yog ob hom kev yooj yim diffusion?
Thaum muaj pua pua txawv proteins thoob plaws hauv lub cell, tsuas yog ob hom pom muaj txuam nrog yooj yim diffusion : channel proteins thiab carrier proteins. Channel proteins feem ntau yog siv los thauj ions hauv thiab tawm ntawm lub cell. Channel proteins tuaj rau hauv ob daim ntawv , qhib channel thiab gated channels.
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