Contractile vacuole thiab nws txoj kev ua taw qhia

Qhov tsab xov xwm no qhia tus nyeem ntawv rau cov qauv ntawm cov nyuaj kab mob - namely, tsom rau cov qauv ntawm cov contractile vacuole ua excretory (thiab tsis xwb) muaj nuj nqi, yuav tham txog lub ntsiab lus ntawm qhov nyuaj thiab piav txoj kev rau lawv lub neej nyob rau hauv lub cheeb tsam.

Contractile vacuole. notion

Vacuole (los ntawm Fabkis vacuole, los ntawm Latin lo lus vacuus -. Dawb paug), me me kheej kheej kab noj hniav nyob rau hauv nroj tsuag thiab tsiaj hlwb los yog unicellular kab mob. Contractile vacuole tshwj xeeb tshaj yog ib qho ntawm cov yooj yim cov kab mob uas nyob rau hauv cov dej tshiab, piv txwv li, ntawm cov protists xws li amoeba proteus, Paramecium caudatum, uas tau txais nws cov thawj lub npe los ntawm tus duab ntawm lub cev, zoo ib yam li tus duab ntawm lub qab xib khau. Nyob rau hauv tas li ntawd mus rau cov yooj yim, zoo tib yam lug muaj nyob rau hauv lub hlwb ntawm ntau yam dej tsis qab ntsev lub paj rwb, uas mus rau lub tsev neeg spongillidae.

Tus qauv ntawm lub contractile vacuole. nws cov nta

Contractile vacuole yog ib tug membrane organelles, uas ua ncaws ntau heev kua los ntawm lub cytoplasm. Lub chaw thiab cov qauv ntawm no unit txawv nyob rau hauv txawv cov kab mob. Lub complex npuas-los yog tubular vacuoles hu ua Spong, cov kua nkag mus rau hauv contractile vacuole. Vim tas mus li lag luam ntawm lub system yog khaws cia ruaj khov cell volume. Nyob rau hauv protozoa muaj contractile vacuoles, uas tshwm sim tawm lub tsev regulating tus osmotic siab thiab kuj pab rau tawm los ntawm lub cev lwj cov khoom. cia li ib lub cev muaj tsuas yog ib cell, uas, nyob rau hauv lem, muab tag nrho cov tsim nyog zog ntawm lub neej. Cov neeg sawv cev ntawm no subkingdoms xws li Paramecium caudatum, Amoeba Proteus, lwm yam unicellular muaj tag nrho cov khoom ywj siab lub cev.

Lub luag hauj lwm ntawm qhov nyuaj kab mob

Tawb ua tag nrho cov tseem ceeb heev functions: xaiv, kev ua pa, irritability, zog, tu tub tu kiv, thiab cov metabolism hauv. Protozoa yog qhov txhia chaw. Qhov loj tshaj tus naj npawb ntawm hom nyob rau hauv lub hiav txwv thiab cov dej, ntau qhov chaw nyob phuam av tej zaum yuav muaj kev cuam tshuam tsob nroj lub neej nyob rau hauv lub cev ntawm multicellular tsiaj thiab tib neeg. Nyob rau hauv cov xwm, tsuas ua tau zoo ib tug kab mob luag hauj lwm, raws li lawv muab kev koom tes nyob rau hauv lub ncig ntawm tshuaj, yog zaub mov rau ntau yam tsiaj.

Contractile vacuole ntawm Amoeba Proteus

Amoeba Proteus - tus neeg sawv cev ntawm cov chav kawm ntawv rhizomes, tsis, nyob rau hauv sib piv rau lwm tus neeg hauv lub cev ntawm mus tas li daim ntawv. Tsiv tom ntej ntawm prolegs. Tam sim no cia tus nrog cov neeg, dab tsi yog qhov muaj nuj nqi ntawm lub contractile vacuole nyob rau amoebae. Qhov no theem kev cai ntawm osmotic siab nyob rau hauv nws tes. Nws yog Amoeba Proteus peev xwm yuav tsim nyob rau hauv ib feem ntawm lub cell. Los ntawm cov txheej membrane ntawm cov dej los ntawm qhov ib puag ncig ntws mus rau hauv lub osmotically. Lub concentration ntawm solute nyob rau hauv lub cell amoeba siab tshaj nyob rau hauv lub cheeb tsam. Yog li, ib tug siab qhov sib txawv hauv cov elementary hlwb thiab tshaj. Contractile vacuole zog nyob rau hauv amoeba - ib hom ntawm suction ntaus ntawv uas outputs qhov tshaj cov dej los ntawm lub cell protozoa. Tawm rau lub cheeb tsam Amoeba proteus sau ua kua tau nyob rau hauv tej feem ntawm lub cev nto.

Xws li ib tug muaj nuj nqi ntawm lub contractile vacuole yog tau rau qhov nyuaj kab mob uas nyob rau hauv cov dej tshiab. Nyob rau hauv cab thiab marine cov ntaub ntawv uas nyob rau hauv ib qhov chaw uas cov osmotic siab yog siab tshaj nyob rau hauv cov dej tshiab, cov tswv yim qub li txo los yog heev tsis tshua yog feem ntau tsis tuaj kawm ntawv. Nyob ib ncig ntawm contractile vacuoles nyob rau hauv lub feem ntau yooj yim cov kab mob no feeb meej mitochondria delivering zog ua osmotic ua hauj lwm.

Dhau li osmoregulatory ua ib tug tseem ceeb heev muaj nuj nqi ntawm kev ua pa, raws li ib tug tshwm sim ntawm osmosis muab khoom dej yaj oxygen. Yuav ua li cas lwm tus neeg yog cov muaj nuj nqi ntawm lub contractile vacuole? Cia li ua excretory muaj nuj nqi, namely nrog cov dej muab metabolic khoom nyob rau hauv lawv lub chaw nyob.

Ua tsis taus pa xaiv osmoregulation nyob rau hauv ciliates khau

Lub cev yog tsuas them los ntawm ib tug tuab plhaub, uas muaj ib tug tsis tu ncua lawm. Nws tau pub mov rau rau cov kab mob, thiab algae, nrog rau tej protozoa. Ciliates kab mob yog ntau tshaj li hais tias ntawm ib amoeba qauv. Nyob rau hauv lub cell, pem hauv ntej thiab nram qab lub khau yog ob contractile vacuoles. Nyob rau hauv no chav tsev distinguishable tank thiab ob peb me me tubules. Contractile vacuole lossi, ua tsaug rau cov qauv no (microtubule), nyob rau hauv ib tug taag qhov chaw nyob rau hauv lub cell.

Lub ntsiab muaj nuj nqi ntawm lub contractile vacuoles nyob rau hauv lub neej ntawm tus neeg sawv cev ntawm qhov nyuaj - osmoregulation, raws li nws tshem tawm los ntawm lub hlwb lub dhau heev lawm dej, uas nkag rau hauv lub cell vim osmosis. Thawj, muaj yog o ntawm cov kev raws, ces tus dej yog pumped tawm ntawm lawv nyob rau hauv ib tug tshwj xeeb tank. Lub reservoir yog txo, yog sib cais los ntawm lub resulting raws los ntawm pores dej tawm. Nyob rau hauv lub cell, ciliates yog ob contractile vacuoles, uas, nyob rau hauv lem, ua nyob rau hauv lus tsis sib xws. Vim lub lag luam ntawm ob xws li muab ib tug tas mus txheej txheem. Nyob rau hauv tas li ntawd, cov dej yog tsis tu ncua daim los ntawm cov kev ua ub ntawm contractile vacuoles. Lawv qho compressed thiab contraction zaus nyob rau lub ambient kub.

Yog li, ntawm chav tsev kub (18 - 20 degrees Celsius), lub zaus ntawm cov lus ntawm vacuoles, raws li ib txhia 10-15 vib nas this. Thiab muab hais tias tej yam ntuj tso vaj tsev khau yog tej dej tshiab nrog dej teev thiab muaj nyob rau ntawd ntawm lwj organic teeb meem, qhov kub ntawm lub nruab nrab ntawm ob peb degrees txawv nyob ntawm seb lub sij hawm no ntawm lub xyoo thiab yog li ntawd lub zaus ntawm cov lus muaj peev xwm mus txog 20-25 seconds. Ib teev contractile vacuole nyuaj kab mob uas muaj peev xwm muab cov hlwb nyob rau hauv ib tug nqi ntawm cov dej. commensurate nrog nws loj. Lawv noog cov as-ham undigested zaub mov, metabolic kawg khoom, kuj yuav ntes tau cov pa thiab nitrogen.

Dej Khib Nyiab kev kho mob protozoa

Effect rau kev nyuaj tshuaj lawm kuj zoo kawg thiab tseem ceeb. Nyob rau hauv reservoirs vim lub qhovntsej thiaj tsis mob ntawm cov dej, yuav nteg qe nyob rau hauv loj qhov ntau cov kab mob. Raws li ib tug tshwm sim, muaj ntau ntau yam protozoa uas yog siv nyob rau hauv cov zaub mov thiab cov kab mob, thiab yog li ua rau kom lub ntuj tu reservoirs.

xaus

Nyob rau hauv cov kev phem ntawm cov yooj yim qauv ntawm cov single-celled kab mob, lub cev uas yog ua los ntawm ib tug tib cell, tab sis nws ua lub zog ntawm tag nrho cov kab mob, wonderfully nruj heev heev rau cov ib puag ncig. Nws muaj peev xwm txawm yuav pom nyob rau hauv cov qauv ntawm cov contractile vacuole. Rau hnub tim, peb twb muaj pov thawj tseem ceeb heev nyob rau hauv tej yam yooj yim xwm thiab lawv cov kev koom tes nyob rau hauv lub voj voog ntawm teeb meem.