Yuav ua li cas concentration gradient cuam tshuam tus nqi ntawm osmosis?
Yuav ua li cas concentration gradient cuam tshuam tus nqi ntawm osmosis?

Video: Yuav ua li cas concentration gradient cuam tshuam tus nqi ntawm osmosis?

Video: Yuav ua li cas concentration gradient cuam tshuam tus nqi ntawm osmosis?
Video: Concentration gradients | Membranes and transport | Biology | Khan Academy 2024, Kaum ib hlis
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Concentration gradient - Lub zog ntawm osmosis yog cuam tshuam los ntawm concentration gradient ; qis tus concentration ntawm cov kuab tshuaj nyob rau hauv ib qho hnyav, qhov nrawm dua osmosis yuav tshwm sim hauv cov kuab tshuaj ntawd. Dej thiab Osmosis - Mus rau qhov txuas no thiab pom cov dej molecules txav mus hla ib daim nyias nyias nyias.

Ntawm no, qhov concentration gradient cuam tshuam li cas rau tus nqi ntawm diffusion?

Thaum nthuav tawm yuav mus tom ntej ntawm lub xub ntiag ntawm a concentration gradient ntawm ib yam khoom, ntau yam cuam tshuam tus nqi ntawm diffusion : Tshaj tawm ntawm concentration gradient : Qhov ntau dua qhov sib txawv hauv concentration , qhov nrawm dua nthuav tawm . Yog hais tias qhov nruab nrab yog tsawg ntom, nthuav tawm nce.

Qhov thib ob, yuav ua li cas thiaj muaj peev xwm cuam tshuam tus nqi ntawm osmosis? Solute peev xwm (Ψs) txo nrog nce daws concentration; qhov txo qis hauv Ψs ua rau txo qis hauv tag nrho cov dej peev xwm . Internal dej peev xwm ntawm cov nroj tsuag cell tsis zoo dua li cov dej ntshiab; Qhov no ua rau cov dej txav los ntawm cov av mus rau hauv cov cag ntoo ntawm osmosis ..

Ntawm no, qhov concentration ntawm ntsev hauv dej cuam tshuam li cas ntawm osmosis?

Ntsev ua rau osmosis los ntawm attracting lub dej thiab ua rau nws txav mus rau nws, hla daim nyias nyias. Ntsev yog ib tug solute. Thaum koj ntxiv dej mus rau ib tug solute, nws diffuses, nthuav tawm lub concentration ntawm ntsev , tsim kev daws teeb meem. Cells yuav tsis nce lossis poob dej yog muab tso rau hauv ib qho tshuaj isotonic.

Dab tsi yog qhov txawv ntawm concentration gradient thiab diffusion?

Cov qhov sib txawv ntawm qhov concentration ntawm ib yam khoom nruab nrab ob thaj chaw hu ua concentration gradient . Qhov loj dua sib txawv , lub steeper lub concentration gradient thiab qhov ceev cov molecules ntawm ib yam khoom yuav diffuse. Kev taw qhia ntawm nthuav tawm yog hais tias yuav 'down' los yog 'nrog' tus concentration gradient.

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