Shelly tub cheev xwm amoeba: piav qhia, qauv, tus nqi, interesting tseeb

Testate amoebae, cov qauv ntawm cov uas peb yuav sib tham txog nyob rau hauv no tsab xov xwm, muaj ib tug xov tooj ntawm cov nta uas ho qha rau lawv los ntawm lwm tus neeg hauv tib-celled tsiaj. Yuav ua li cas yog tshwj xeeb hais txog cov kev zoo kab mob?

Testate amoebae: yus nta

Peb pib nrog cov kev faib ntawm cov tsiaj. Lawv yog cov neeg ntawm ib-celled subkingdoms teej tug mus rau qhov kev txiav txim sarkodovyh. Lawv lub cev muaj ib qho kev tsis ruaj tsis khov zoo li devoid densified phab ntsa txheej. Txav mus rau cov hlwb siv prolegs - ib ntus protrusions ntawm cytoplasm. Lub cell muaj ib tug raug tus qauv ntawm amoebae. Nws muaj ib tug membrane ntawm lub cytoplasm thiab organelles: lub nucleus, mitochondria, vacuoles thiab digestive contractile.

Nta testate amoebae

Ib tug loj ib feem ntawm lub cev ntawm no hom ntawm amoeba yog nyob rau hauv lub dab ntxuav tes. Qhov no qauv loj ntawm 50 mus rau 150 microns, muaj ib puag ncig los yog txiv moj coos-zoo lawm. Los ntawm cov lus qhib, uas yog hu ua lub qhov ncauj, testate amoebae qhia tawm pseudopodia. Nws yog tsim nyog rau lawv lub zog. Cov neeg zoo li tej zaum yuav tsim psevdohitinom los yog organic teeb meem.

Ib txhia ntawm cov muaj xws li ib yam khoom uas yog nyob rau hauv lub cheeb tsam. Tus txheej txheem ntawm txoj kev ua xws zoo li yuav siv sij hawm qhov chaw nyob rau hauv ob peb ua sawv. Thawj amoeba ntawm prolegs pib nkaum nplej, tawg tsam ntawm zoo li ntawm diatoms los yog lwm yam khoom hais mus rau hauv lub cell. Ntxiv mus, lawv yog glued ua ke los ntawm txoj kev ntawm lub cytoplasm thiab secreted nraum zoov. Anatomically testate amoebae cell yuav tsum tau muab faib ua peb qhov chaw. Thaum lub sab saum toj ntawm nws cytoplasm txheej txheem tseem ceeb thiab ntau hom inclusions - cia cov as-ham. Nyob rau hauv nruab nrab ntawm lub digestive thiab contractile vacuole. Ib tug los ze zog mus rau lub qhov ncauj devoid ntawm lub cytoplasm thiab organelles, thiab inclusions. Los ntawm nws yog tsim pseudopods.

Kev sib raug zoo tsev thiab qhov ib puag ncig

Testate amoebae lug faib nyob rau hauv tshiab thiab ntsev dej, av, zoo-watered chaw ntawm cov av, qhov chaw ntawm cov nroj tsuag, los mosses. Lawv puag ncig influences cov kev yam ntxwv nta. Piv txwv li, amoeba difflugia dab dej, uas yog feem ntau nyob dej tsis qab ntsev muaj ib lub qhov ncauj. Nyob rau hauv ob peb inhabitants ntawm lub seas tog kom huv si permeated limestone koob, li ntawd, cuav ko taw tawm ntawm lub loj tus naj npawb ntawm qhov.

nthuav kev tshawb kawm

Cov dej tsis qab ntsev inhabitants nyob ib tug xov tooj ntawm amoebas, uas xav mus ua neej nyob tsuas nyob rau hauv lub heev cov dej tsis huv. Lwm tus hom nyob rau hauv cov tej yam kev mob tuag. Nws kuj qhia tau, thiab heev heev kuaj thwmsim. Xav txog tej yam uas nyob rau hauv ntub dej av muab tso rau ob peb hom testate amoebae. Ntxiv mus, no ib puag ncig artificially paug hauv cov roj. Tom qab ob peb hnub ntawm hom ntau haiv yuav tsis kam ho. Ib txhia testate amoebae pib blacken thiab hloov zoo.

physiology amoebae

Testate amoebae yog yus muaj los ntawm ib tug xov tooj ntawm cov nta ntawm chav kawm ntawm physiological dab. Hais tawm ntawm lub hlwb yog nqa tawm los mus faib ua ob, ib yam li lwm cov tswv cuab hauv subkingdoms. Txawm li cas los, vim rau qhov xub ntiag ntawm lub plhaub, muaj ib co sib txawv. Yog li ntawd, ua ntej ib ncig ntawm lub protruding ib feem ntawm lub amoeba pib tsim ib tug tshiab lub dab ntxuav tes, thiab xwb ces los faib nws tus kheej. Thawj tus me nyuam tus kab mob no nyob twj ywm interconnected cytoplasmic choj. Nws ntxiv pereshnurovyvaetsya. Raws li ib tug tshwm sim, tus me nyuam neeg no ho muaj cais thiab pauv mus rau ib qho kev ywj hav zoov.

Rau ib txhia hom cell tu tub tu kiv yog cov ntau tshaj division. Nyob rau hauv no crushing txheej txheem tshwm sim hauv lub plhaub. Raws li ib tug tshwm sim, outwardly tshwm liab qab ntawm tes. Tog, lawv tsim lawv tus kheej nyob rau hauv lub chav kawm ntawm nws lub neej.

Tsiv amoeba siv prolegs. Cov uas tsis yog-tas mus li protrusions ntawm lub cytoplasm yog hu ua pseudopodia. Yuav kom mus tom ntej amoeba extends cuav ko taw, uas yog nyob rau cov nyiaj them yug, thiab ces tightens rau nws tag nrho lub cev. Nyob rau hauv cov xwm, hom zog yog tseem cov yam ntxwv ntawm cov ntshav dawb suav thiab phagocytic hlwb, yog li nws yog hu ua "amoeboid".

Fais fab amoeba tshwm sim los ntawm gripping nws hais pseudopodia thiab tom ntej kev zom nyob rau hauv tshwj xeeb vacuoles. Gas pauv yuav siv sij hawm qhov chaw los ntawm qhov chaw unit cell. Cov kev cai ntawm lub osmotic siab yog contractile vacuoles, ntawm uas muab tshem tawm tshaj cov dej uas muaj ntsev yaj nyob rau ntawd.

Nrog rau qhov pib ntawm kev phiv tej yam kev mob testate amoebae lub caij nplooj zeeg mus rau hauv ib cyst. Lawv plhaub yog nyeem tas, thiab cov kev siv ntawm kev sib pauv dab yog significantly txo. Yog hais tias koj hloov lub tej yam kev mob ntawm cov hav zoov ntawm lub hlwb rov qab mus rau qub hauj lwm.

Testate amoebae: tus nqi ntawm cov xwm

Cov no yog cov tseem ceeb kab mob nyob rau hauv lub ecosystem. Shelly amoeba, nyob rau hauv nrog lwm yam ib leeg-celled kab mob yog ib feem ntawm nws. Cov kab mob no yog ib qhov txuas rau hauv cov saw ntawm mov, ib qho taw qhia ntawm lub purity ntawm cov dej tshiab. Inestimable nqi plhaub amoebae nyob rau hauv lub tsim pob zeb. Tej me nyuam dej thiab marine cias li ib tug tshwm sim ntawm lawv lub neej tau tsim limestone, cwj mem av dawb thiab lwm yam sedimentary pob zeb.

Nyob rau hauv cov xwm, kuj paub sarkodovyh saib, uas yog heev txaus ntshai rau tib neeg. Amoeba-killer cia txau rau cov tib neeg lub hlwb. Thaum lub caij, nws kaw 23 tus neeg mob ntawm tib neeg mob no kab. Qhov no hom ntawm ib leeg-celled dej tsis qab ntsev yog ib tug neeg nyob li. Hauv txiv neej nws penetrates los ntawm lub qhov ntswg kab noj hniav, txuas ntxiv nws txoj kev mus rau hauv lub channel ntawm lub olfactory paj mus rau lub hlwb. Raws li nws lub zog, nws txav tag nrho cov ntaub so ntswg uas yuav pab tau raws li ib tug teeb meem rau nws. Tus txiv neej nyob rau tib lub sij hawm muaj ua ntej yam mob loj heev mob taub hau, ua npaws, tshwm sim los ntawm ib qho kev nce rau hauv lub cev kub. Ntxiv xws yam ntxwv pib lub hlwb puas tsuaj, raws li kev kub taub hau thiab yog toog pom, uas inevitably ua rau txoj kev tuag.

Yog li ntawd, cov mej zeej ntawm qhov kev txiav txim testate amoebae yog unicellular tsiaj teej tug mus rau cov chav kawm ntawv ntawm sarkodovyh. Lawv lub hlwb muaj ib tug tsis ruaj tsis khov zoo ntawm lub cev thiab pseudopods li organelles ntawm cov lus tsa suab. Sab nraum ntawm daim nyias nyias qhov no zoo ntawm amoebae ntawm nws tus kheej tsim ib lub plhaub.