KumiswaAmakolishi namanyuvesi

Eukaryotes - kukhona eziphilayo kabani amaseli ane-nucleus

Eukaryotes - lo okuqhubekayo eziningi eziphilayo wahlela. Kulesi sihloko sizohlola esinye abameleli izilwane zasendle kungokwalabo leli qembu futhi iziphi izici baye bavumela inhlangano uwaphuze sesimweni evelele emhlabeni organic.

Bobani eukaryotes

Ngokusho incazelo umqondo, eukaryotes - kukhona eziphilayo kabani amaseli aqukethe i-nucleus ahlotshiswa. Lezi zihlanganisa imibuso ezilandelayo: izitshalo, izilwane, isikhunta. Futhi kungakhathaliseki ukuthi kunzima umzimba wabo luyatholakala. I amoeba ngesibonakhulu, Volvox amakoloni, Sequoia giant - konke eukaryotes.

Nakuba lezi amaseli ngezinye izikhathi kungase kwezicubu bancishwa-nucleus. Ngokwesibonelo, akuyona elibomvu egazi. Kunalokho, le cell yegazi iqukethe-hemoglobin zithutha umoya-mpilo ne-carbon dioxide. La mangqamuzana aqukethe i-nucleus kuphela kusaqalwa sokuthuthuka. Khona-ke, lokhu organelle uyabhujiswa, futhi nalo, futhi ulahlekelwe ikhono uhlukanise yonke isakhiwo. Ngakho-ke, ngo-ekwenzeni imisebenzi yawo, amaseli anjalo afe.

isakhiwo eukaryotic

Ngo emangqamuzaneni eukaryotes ane-nucleus. Futhi ngezinye izikhathi ngisho noyedwa. Lokhu organelle dvumembrannaya iqukethe matrix yayo ulwazi zofuzo okubhalwe ngendlela molecule ye-DNA. Umnyombo siqukethe iyunithi ebusweni, esinikela ezokuthutha izidakamizwa, futhi-matrix - imvelo layo langaphakathi. Umsebenzi oyinhloko lesi sakhiwo - ukugcinwa kolwazi zofuzo nokudluliselwa yayo indodakazi amaseli okubangelwa ukuhlukana.

Inner core lesifishane izingxenye eziningi. Okokuqala nje karyoplasm. Iqukethe nucleoli futhi chromatin imicu. Lesi sakamuva aqukethe amaprotheni acid nucleic. Yasungulwa lapho chromosome Helix. Bamane kukhona abathwali ukwaziswa kwezakhi zofuzo. Eukaryotes - kukhona eziphilayo lapho kungenzeka ezimbili izinhlobo cores kwakhiwa kwezinye izimo: vegetative futhi okuzala. Isibonelo esimangalisayo kulesi - ciliate. Ewumgogodla okuzala umsebenzi ukugcinwa kanye ukudluliselwa genotype, futhi vegetative - ukulawulwa amaprotheni biosynthesis.

Umehluko oyinhloko izi- futhi eukaryotes

Prokaryotes ngikhiphé-nucleus. Leli qembu eziphilayo uwukuphela kweqiniso embusweni bemvelo - bacterium. Kodwa izici ezifana kwesakhiwo, akusho ukuthi kumaseli zalezi zinto azikho abathwali ukwaziswa kwezakhi zofuzo. Ama-bacterium zimumethe-molecule oyisiyingi esingamakhilomitha-DNA - plasmid. Noma kunjalo, ahlelwe ngendlela amaqoqo endaweni ethile ye-cytoplasm futhi abanalo imvilophi ezivamile. isakhiwo okunjalo kwezinkolo kubizwa ngokuthi nucleoid. Kunenye umehluko. DNA kumaseli prokaryotic awahlobene core amaprotheni. Ososayensi baye basungula ukuba khona plasmids kumaseli ka eukaryotes. Ziyakwazi kwezinye organelles lulwimi ezizimele, njenge mitochondria futhi plastids.

izici Progressive kwesakhiwo

Eukaryotes kukhona eziphilayo izici eziyinkimbinkimbi isakhiwo kuwo wonke amazinga inhlangano. Okokuqala kumayelana indlela ukunwetshwa. amagciwane Nucleoid inikeza elula wabo - the division yeseli ku ezimbili. Eukaryotes - eziphilayo lapho labo abazokwazi futhi zonke izinhlobo kabusha zazo siqu: ngokobulili futhi asexual, parthenogenesis, lokuhlanganisa. Linikeza ukuze exchange of ukwaziswa kwezakhi zofuzo, ukuvela sokuhlanganiswa ku genotype eziningi izici ewusizo, futhi kungakho lithathelwe kangcono njalo ezishintshashintshayo zendawo eziphila kuyo. Lesi sici futhi eukaryotes bavunyelwe anesikhundla ovelele kule isimiso sezwe organic.

Ngakho eukaryotes kukhona eziphilayo kabani amaseli ane-nucleus ahlotshiswa. Lezi zihlanganisa izitshalo, izilwane kanye nesikhunta. Ukuba khona core isici okuqhubekayo isakhiwo, ukuhlinzeka ezingeni lelisetulu ukuthuthukiswa futhi lithathelwe.

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