Osmosis. Osmosis yog kev txav ntawm cov dej hla ib daim nyias nyias los ntawm thaj tsam ntawm qhov tsis tshua muaj kuab lom mus rau thaj tsam ntawm cov kua qaub siab.
Yuav ua li cas yog qhov kev txav ntawm cov kua nplaum hla lub cell membrane?
Kev txav ntawm cov kua nplaum hla cov daim nyias nyias tuaj yeem muab faib ua ob hom: passive diffusion thiab nquag thaujPassive diffusion yuav tsum tsis muaj lub zog ntxiv dua li qhov muaj nyob hauv cov kua nplaum electrochemical (concentration) gradient thiab ua rau cov kua nplaum ncav cuag equilibrium hla daim nyias nyias.
YPuas osmosis kev txav ntawm cov kua nplaum hla ib daim nyias nyias?
Osmosis yog kev txav dej ntawm cov dej hla ib qho kev xaiv permeable daim nyias nyiasuas tau tsav los ntawm qhov sib txawv ntawm cov ntsiab lus ntawm ob sab ntawm daim nyias nyias. Ib qho kev xaiv permiable membrane yog ib qho uas tso cai rau cov dej tsis muaj kev txwv, tab sis tsis yog cov kuab tshuaj molecules lossis ions.
Yam yooj yim txav hla ib daim nyias nyias hu ua dab tsi?
" Yooj yim diffusion." Yooj yim diffusion yog zoo nkauj npaum li cas nws suab zoo li - molecules txav mus rau lawv gradients los ntawm daim nyias nyias. Molecules uas xyaum yooj yim diffusion yuav tsum me me thiab nonpolar, thiaj li yuav kis tau los ntawm daim nyias nyias.
Puas yog diffusion Lub zog ntawm cov tshuaj?
Diffusion yog qhov txav ntawm cov molecules los ntawm thaj chaw siab ntawm cov molecules mus rau thaj chaw uas muaj qhov qis dua… qis dua, nws tau piav raws li txav cov tshuaj "down the concentration gradient ".
