Chlamydomonas: izici isakhiwo Iinhlangano

Kwaphela isikhathi eside, ososayensi ayikwazanga ukunquma isimo taxonomic ukumangala umzimba, okuyinto kuzoxoxwa ngakho esihlokweni sethu. Phela, lokhu kuyinto unicellular ukukwazi ngenkuthalo ukuhambisa, ngesikhathi kwenziwa inqubo ye-photosynthesis. Futhi igama kuyathakazelisa. It chlamydomonas.

UMnyango ulwelwe Green

Ngenxa yalokho, summarily, ososayensi baye baphetha ngokuthi umzimba kuyinto kuvakashe ummeleli wendlunkulu umbuso isitshalo, njengoba uyakwazi zamagama esizimele izinto zemvelo ukukhanya, kantsi sicuketse loku plastids oluhlaza kuseli.

Chlamydomonas (isithombe sikhombisa okuqukethwe cell) uyilungu leqembu ulwelwe oluhlaza, okuyinto ngokuvamile siqukethe kuze kufinyelele ayizinkulungwane ezingu-15. Kungatholakala kubhalwe emizimbeni encane angenasawoti. Ngokuvamile basuke kahle sekuqala ukufudumala. Lokhu alga akuyona ngikhetha ngokweqile kakhulu ekuhlanzekeni amanzi, ngakho-ke, ngenkuthalo Ukhuthaza endaweni engcolile.

Chlamydomonas: isakhiwo Cell

Naphezu kweqiniso lokuthi lona lisiza imelelwa cell eyodwa kuphela ubukhulu ezincane, it has a isakhiwo eyinkimbinkimbi, ukufeza zonke izinqubo edingekayo ekuphileni.

Chlamydomonas iseli ine okusaqanda, futhi ngezinye izikhathi pyriform. Ngezinye phambi usiko itholakala flagella ezimbili. Lokhu ukuhamba organelle. igobolondo yeselula yakhiwa pectic izinto futhi glycoprotein. La ma-carbohydrate lidlulisele amandla ukuze olwelwesini i umzimba.

Njengezinye amaseli kubekwe phakathi cytoplasm - yangaphakathi-semi ketshezi okuqukethwe, onikeza ifomu bese enza umzimba. Iningi ulwelwe kuthatha chloroplast. Kuye cupped. Ngezinye izikhathi futhi ibizwa nangokuthi i chromatophores. Kuyinto pyrenoids - ekwakhekeni imvelo amaprotheni, azungeze zazo imali izakhamzimba. Futhi kule cytoplasm kuba iso ukukhanya-sensitive - uhlobo "sense sitho". Ibizwa ngokuthi inhlamba.

Umsebenzi contractile vacuole

Chlamydomonas - siklanyelwe ukuphila emanzini. Ngakho-ke, njalo kunesidingo ukususa uketshezi ongena iseli kusukela imvelo. Lokhu kwenziwa organelles ekhethekile - vacuole contractile. Kungani amanzi kufakwa le Chlamydomonas? Into wukuthi angaphezulu aqukethe usawoti ongaba emanzini ngokuvamile kunalelo iseli qobo. Ngokusho imithetho yemvelo, kanye notshwala uketshezi isifunda nge lokuhlushwa ephakeme ephansi. okungukuthi e ulwelwe cell. vacuole Contractile ukuqeda ulwelwe kusukela uketshezi ngokweqile.

Izici umsebenzi cell

Ngendlela ibele chlamydomonas mixotrophy. Lokhu kusho ukuthi ukukhanya uyakwazi ye-photosynthesis. Kodwa ngenxa yokuntuleka kwezinhlelo ezibanzi izimo ezidingekile synthesis izinto eziningi eziphilayo iba heterotrophs. It nje sucks izakhi ngomumo ukuthi kukhona amanzi.

Ukuswelakala kokusebenza ngokuhlanganyela umswakama cell organelle ukunyakaza kabusha futhi zonke izinqubo ezibalulekile kuhoxisiwe. Ngakho ithwala kwezimo ezingezinhle chlamydomonas.

Ulwelwe ukukhiqizwa kabusha kwenzeka ngezindlela eziningi. Ngokuvamile - asexual. Kulokhu, iseli kuguquka. It kusetha kabusha flagella, ngakho ukuhamba kusuka kube nzima kakhulu. Ngaphakathi amaseli akha zoospores. Inombolo yabo zingaba phakathi 2 kuya 8. Kuyinto amaseli motile. Bephuma umzimba komama sikhule futhi uqale khona ezimele. Le nqubo okukhulu kakhulu - ke iyaphindwa nsuku zonke. Lapho izimo ezikahle ze impilo Chlamydomonas, uya ukuzala. Ngakho kwakheka ngaphakathi gametes yayo - amaseli lwegciwane. Bathandana nalo babuye bathandane emanzini ngaleso confluence ngazimbili. Ngenxa yalokho, ukwakheka zygote. Kuleli zinga-ke, ziphambi ukuqala izimo ezikahle. Khona-ke zygote ihlukaniswe, futhi ngayinye kuwo yakha abadala 4.

Inani Chlamydomonas ngokwemvelo futhi ukuphila komuntu

Ummeleli we ulwelwe oluhlaza Sekuyisikhathi eside isihloko zocwaningo laboratory. Imvelo ukubaluleka kwalo ngenxa zom emanzini angajulile amile. Matasa le nqubo kwenzeka ekwindla kanye entwasahlobo. Lokhu ukukhiqizwa kabusha nezikhathi enkulu umfutho ulwelwe.

Ngenxa owumphumela oluhlaza alga izidalwa ezincane chlamydomonas, it has a isakhiwo kunalokho eyinkimbinkimbi futhi izinqubo ezibalulekile ezenza kungenzeka khona yayo imvelo yasemanzini.