Cnidocytes vs Nematocysts
Cnidocyte thiab nematocysts suab txawv dhau, tab sis lawv tsis yog li ntawd. Yog li ntawd, kev nkag siab lub ntsiab lus ntawm cov ntsiab lus no yuav yog qhov tseem ceeb tiag tiag. Qhov tseeb ntawm cov qauv no yog qhov txaus siab heev, thiab tsab xov xwm no tshawb nrhiav cov neeg los kawm seb ob qho tib si zoo li qub lossis ob hom sib txawv. Yog li, cov ntaub ntawv nthuav tawm tsuas yog muaj txiaj ntsig zoo rau cov neeg nyeem tsis yog.
Cnidocyte yog dab tsi?
Cnidocytes tseem hu ua nematocytes lossis cnidoblasts. Cov no yog hom kab mob venomous tshwj xeeb pom nyob hauv Coelenterates lossis cov tswv cuab ntawm Phylum: Cnidaria. Nws yog qhov zoo tshaj plaws uas cnidarians tuaj yeem noj cov ntses loj los ntawm kev predation. Qhov kev muaj peev xwm txaus ntshai no yog vim muaj cov cnidocytes lossis nematocytes. Qhov tseeb yog vim li cas yog qhov muaj cov organelle hu ua nematocyst hauv txhua cnidocyte. Cov qauv thiab lwm yam tseem ceeb ntawm nematocysts tau piav qhia hauv kab lus tom ntej. Cov hlwb venomous no tseem ceeb heev rau cov coelenterates hauv kev tiv thaiv lawv cov colonies nrog rau kev noj zaub mov. Lawv lub peev xwm predatory yuav tsum tau saib xyuas, feem ntau vim tias cov cnidarians tsis muaj lub cev pob txha thiab feem ntau tsis muaj zog. Txawm li cas los xij, cnidocytes yog ib leeg siv hlwb thiab siv tsis tau tom qab ib qho kev tua. Tsis tas li ntawd, yuav tsum zam kom tsis txhob muaj kev kub ntxhov thiab kev ua rau tus kheej. Yog li ntawd, muaj kev tswj hwm ntawm kev tua hluav taws. Raws li cov qauv ntawm nematocytes, muaj ntau tshaj 30 hom, tab sis lawv tag nrho poob rau hauv plaub hom loj. Lawv plaub hom muaj cov tswv yim sib txawv los tua cov tsiaj xws li tho, nplaum, qhwv, thiab lwm yam kev tua. Yog li ntawd, qhov tseem ceeb ntawm cnidocytes rau cov cnidarians tsis tuaj yeem muab piv nrog rau lwm cov kabmob hauv cov ecosystem uas muaj kev sib tw heev.
Nematocyst yog dab tsi?
Nematocysts yog cov kab mob tshwj xeeb pom hauv cov nematocytes ntawm coelenterates, raws li tau piav qhia saum toj no. Lub nematocyst yog ib lub tshuaj ntsiav nrog cov duab ntawm lub teeb, uas muaj cov ntse-edged barb txuas rau hauv qab ntawm cov tshuaj ntsiav los ntawm cov xov coiled. Sab nraum lub capsule, muaj cov plaub hau me me zoo li hu ua cnidocil, uas yog qhov ua rau tua hluav taws nrog cov tshuaj lom. Thaum lub tshuab ua haujlwm, lub barb nrog cov tshuaj lom mus txog lub hom phiaj (feem ntau yog cov tawv nqaij ntawm cov kab mob lossis cov tsiaj nyeg) ntawm qhov nrawm nrawm nrog qhov nrawm ntawm 5 41, 000, 000 meters ib ob. Lub sij hawm nruab nrab kom ncav cuag lub hom phiaj kab mob yog xam los ntawm kev tshawb fawb tsis ntev los no, thiab nws tsuas yog 700 nanoseconds. Ntau lab ntawm cov nematocysts tau qhib ib zaug los ntawm tag nrho cov cheeb tsam ntawm coelenterates (xws li jellyfish) tuaj yeem cuam tshuam tau yooj yim txawm tias qhov loj me me. Thaum ib tug kab mob wanders los ntawm ib tug colony ntawm cnidarians, lub invisible cnidocil triggers yog kov, thiab ib tug tam sim ntawd tshuaj lom nres yog ua rau tuag. Feem ntau, cov tshuaj lom tau raug txheeb xyuas tias yog neurotoxin, uas ua rau lub paj hlwb ntawm cov tsiaj nyeg.
Dab tsi yog qhov txawv ntawm Cnidocytes thiab Nematocysts?
• Cnidocytes yog ib hom cell tshwj xeeb hauv cnidarians, whereas nematocysts tshwj xeeb sub-cellular organelles pom hauv cnidocytes.
• Cnidocytes yog plaub hom tseem ceeb, thiab nematocysts pom nyob rau hauv ib qho ntawm cov hom.
