Cells ntawm cov nroj tsuag thiab tsiaj txhu muaj ntau cov qauv uas muab lawv cov haujlwm tseem ceeb. Ib tug ntawm lawv yog vacuoles. Ntawm lawv tus kheej, lawv muaj ntau qhov sib txawv tseem ceeb. Los ntawm peb tsab xov xwm koj yuav kawm seb vacuoles yog dab tsi thiab vim li cas cov kab mob muaj sia xav tau lawv.
Permanent cell structures
Vacuoles yog ib leeg-membrane organelles ntawm cov nroj tsuag thiab tsiaj hlwb. Qee tus ntawm lawv yog cov qauv ruaj khov, lwm tus tshwm sim raws li lawv tsim nyog ua haujlwm. Nyob ntawm cov qauv nta, cov organelles muaj peev xwm khaws cov as-ham, tawg thiab ua haujlwm tswj.
Nyob ntawm cov qauv
Muaj peb hom vacuoles. Nyob rau hauv lub hlwb ntawm cov tsiaj yooj yim yog contractile thiab digestive. Lawv tswj hwm osmotic siab, tshem tawm cov khoom seem uas tsis tau tso tseg thiab ua lub luag haujlwm secretory. Tab sis nyob rau hauv cov nroj tsuag, cov no yog cov reservoirs loj uas muaj dej, nyob rau hauv uas tag nrho cov khoom tsim nyog rau lub cell yog yaj.
Vacuoles nyob rau hauv cov nroj tsuag cell
Hauv cov nroj tsuag hluas, cov qauv no tuaj yeem nyob yuav luag txhua qhovcov ntsiab lus sab hauv. Thiab nws yooj yim los piav. Tom qab tag nrho, lub cev loj hlob xav tau ntau cov khoom cia rau kev loj hlob. Cov cell vacuoles yog dab tsi? Cov no yog cov loj ib leeg-membrane reservoirs nrog cell sap. Cov tom kawg yog dej nrog yaj carbohydrates thiab residues ntawm inorganic tshuaj. Cov kua txiv ntawm tes kuj suav nrog ntau yam khoom siv metabolic. Nws tuaj yeem yog alkaloids, tannins. Nws kuj muaj cov pigments uas muab xim rau ntau qhov chaw ntawm cov nroj tsuag. Yog li, lub vacuole nyob rau hauv cov nroj tsuag cell plays lub luag hauj lwm ntawm ib hom "pantry".
Kev cog lus vacuoles
Cov qauv ntawm lub vacuole, uas ua haujlwm tswj hwm, yog qhov sib txawv kiag li. Feem ntau ntawm cov qauv no muaj nyob rau hauv lub hlwb ntawm cov dej qab zib thiab marine protozoa. Dab tsi yog vacuoles uas tswj cov cell turgor? Lawv pulsating npuas nyob ib ncig ntawm uas muaj ib tug network ntawm tubules. Cov no yog cov kev thauj mus rau cov kua. Los ntawm cov tubules, cov kua ntau dhau ua ntej nkag mus rau lub vacuole los ntawm cytoplasm, thiab twb raug tshem tawm ntawm nws.
Cov kua dej ntau dhau los ntawm lub xov tooj ntawm qhov twg thiab vim li cas thiaj yuav tsum tau tshem tawm? Nws yog txhua yam hais txog cov cai ntawm physics. Raws li lawv, kev txav mus los ntawm thaj chaw uas muaj qhov siab dua mus rau qis dua. Txij li thaum muaj ntsev ntau hauv ib puag ncig, dej pib ntws mus rau hauv lub cell. Nws cov cuab yeej saum npoo yuav tsuas tsis tiv taus qhov siab. Thiab ua tsaug rau contractile vacuoles, tib theem ntawm osmotic siab thiab sib npaug nrog ib puag ncig yog tswj.
Nyob rau hauv vacuoles
Lub plab zom mov zom cov tshuaj nyuaj rau hauv cov yooj yim uas cov kab mob tuaj yeem nqus tau. Cov qauv no yog cov tsim tsis tas li. Lawv tshwm sim hauv qhov chaw ntawm cytoplasm qhov twg cov khoom noj khoom haus nyob. Nws tuaj yeem yog ob qho tib si khoom thiab cov kua. Ib leeg-membrane vesicle uas muaj hydrolytic enzymes yog tsim nyob ib ncig ntawm lawv. Nyob ntawm qhov xwm txheej ntawm cov ntsiab lus, ib puag ncig hauv nws hloov ntawm acidic mus rau alkaline. Cov tshuaj lom neeg lom neeg no ua rau muaj tshuaj lom neeg, tab sis tsis yog ib feem ntawm nws cov khoom. Tsis tas li ntawd, los ntawm phab ntsa ntawm lub vacuole, zaub mov nkag mus rau hauv cytoplasm thiab absorbed los ntawm lub cev. Nws cov undigested residues raug tshem tawm los ntawm cell membranes los yog tshwj xeeb formations.
Yog li, hauv peb tsab xov xwm peb tau tshuaj xyuas seb vacuoles yog dab tsi, tau paub txog lawv qhov sib txawv. Nyob ntawm cov qauv nta, lawv tuaj yeem khaws cov khoom, rhuav tshem lossis tshem tawm ntawm lub xovtooj ntawm tes thiab nws cov qauv.
