Qhov sib txawv tseem ceeb ntawm tonicity thiab osmolarity yog qhov tonicity ntsuas tsuas yog qhov concentration ntawm cov tshuaj tsis nkag mus rau hauv cov ntaub so ntswg semipermeable thaum lub osmolarity ntsuas tag nrho cov concentration ntawm kev nkag mus thiab tsis nkag mus rau cov kua.
Osmolarity yog qhov ntsuas ntawm osmotic siab ntawm kev daws. Hauv cov ntsiab lus yooj yim, nws yog kwv yees li qhov ntsuas ntawm cov kuab tshuaj hauv cov tshuaj. Ntawm qhov tsis sib xws, tonicity yog hais txog qhov txheeb ze ntawm cov ntsiab lus ntawm cov ntsiab lus hauv lub cell nrog rau cov concentration sab nraud ntawm tes. Yog li, ob qho tib si tonicity thiab osmolarity zoo li yog cov ntsiab lus zoo sib xws. Txawm li cas los xij, muaj qhov sib txawv uas peb yuav tham hauv kab lus no.
Tonicity yog dab tsi?
Tonicity yog ib qho kev ntsuas ntawm osmotic siab gradient los ntawm cov dej muaj peev xwm ntawm ob qho kev daws teeb meem sib cais los ntawm ib lub semipermeable membrane. Nws txhais tau tias; lo lus tonicity piav qhia txog qhov txheeb ze ntawm cov tshuaj solutes I uas txiav txim siab qhov kev taw qhia thiab qhov twg ntawm kev nthuav dav. Qhov kev ntsuas no tseem ceeb hauv kev txiav txim siab cov lus teb ntawm cov hlwb uas nkag rau hauv kev daws teeb meem sab nraud.
Daim duab 01: Cov txiaj ntsig ntawm Tonicity ntawm cov qe ntshav liab hauv kev daws sab nraud
Tsis zoo li osmotic siab, lub tonicity tsuas yog cuam tshuam los ntawm cov kuab tshuaj uas tsis tuaj yeem dhau los ntawm daim nyias nyias. Cov kua nplaum uas tuaj yeem nkag mus rau hauv daim nyias nyias tsis muaj kev cuam tshuam rau tonicity. Nws yog vim hais tias, cov concentration ntawm cov kuab tshuaj no yeej ib txwm nyob twj ywm tib yam nyob rau hauv ob sab ntawm daim nyias nyias. Feem ntau, peb qhia lub tonicity nrog rau kev hwm rau lwm txoj kev daws teeb meem. Raws li, muaj peb hom kev daws teeb meem raws li tonicity; Cov kev daws teeb meem hypertonic, cov kev daws teeb meem hypotonic, thiab cov kev daws teeb meem isotonic. Cov kev daws teeb meem hypertonic muaj cov ntsiab lus siab ntau dua li lwm cov tshuaj thaum cov tshuaj hypotonic muaj cov kua qaub qis dua. Ib qho kev daws teeb meem dhau los ua isotonic yog tias qhov ua tau zoo osmole concentration ntawm cov tshuaj ntawd zoo ib yam li lwm cov tshuaj.
Osmolarity yog dab tsi?
Osmolarity lossis osmotic concentration yog ib qho kev ntsuas ntawm cov kuab tshuaj uas tau muab los ntawm chav tsev osmoles ntawm cov kuab tshuaj ib liter ntawm kev daws. Peb tuaj yeem txheeb xyuas chav ua Osm / L. Ib yam li ntawd, peb tuaj yeem siv tus nqi no los ntsuas osmotic siab ntawm kev daws. Yog li, tonicity ntawm kev daws ib yam nkaus. Qhov sib npaug uas peb tuaj yeem siv los ntsuas qhov ntsuas no yog raws li hauv qab no:
Osmolarity=∑ψiiCi
Ntawm no, ψ yog osmotic coefficient, n yog tus naj npawb ntawm cov khoom rau hauv cov molecule dissociates, thiab C yog cov molar concentration ntawm cov kua. Ib yam li ntawd, muaj peb hom kev daws teeb meem raws li osmolarity; isosmotic, hyperosmotic thiab hypoosmotic.
Qhov txawv ntawm Tonicity thiab Osmolarity yog dab tsi?
Cov ntsiab lus tonicity thiab osmolarity muaj feem cuam tshuam tab sis cov ntsiab lus sib txawv. Qhov laj thawj yog vim li cas lawv muaj feem cuam tshuam rau ib leeg yog tias ob qho tib si cov ntsiab lus sib piv cov ntsiab lus ntawm ob qho kev daws teeb meem sib cais los ntawm ib lub semipermeable membrane. Cov ntsiab lus no txawv ntawm ib leeg raws li hom solute lawv coj mus rau hauv tus account thaum ntsuas. Yog li ntawd, qhov sib txawv tseem ceeb ntawm tonicity thiab osmolarity yog qhov tonicity ntsuas tsuas yog qhov concentration ntawm cov tshuaj tsis nkag mus los ntawm cov ntaub so ntswg semipermeable thaum osmolarity ntsuas tag nrho cov concentration ntawm nkag mus thiab tsis nkag mus rau cov kua.
Cov hauv qab no infographic muab qhov tseeb ntxiv ntawm qhov sib txawv ntawm tonicity thiab osmolarity.
Summary – Tonicity vs Osmolarity
Cov ntsiab lus osmolarity thiab tonicity yog sib cuam tshuam raws li ob nqe lus no piv cov kuab tshuaj ntau hauv cov tshuaj. Tab sis, tib lub sij hawm, cov ntsiab lus yog cov ntsiab lus tshuaj sib txawv raws li hom kev daws teeb meem uas lawv coj mus rau hauv tus account hauv lawv qhov ntsuas. Yog li ntawd, qhov sib txawv tseem ceeb ntawm tonicity thiab osmolarity yog tias lub tonicity ntsuas tsuas yog qhov concentration ntawm cov tshuaj tsis nkag mus rau hauv cov ntaub so ntswg semipermeable thaum lub osmolarity ntsuas tag nrho cov concentration ntawm nkag mus thiab tsis nkag mus rau cov kua.
