Chlamydomonas: iimpawu isakhiwo nentlangano

Kangangexesha elide, oosonzululwazi angamisela ubume taxonomic ye Bamangaliswa ephilayo, nto leyo eza kuxutyushwa kwinqaku lethu. Ngapha koko, le kwiseli ukwazi ukuba ngenkuthalo ukuhamba, lo gama yokuphumeza inkqubo yefotosinthsis. Wathi ke igama layo umdla. It chlamydomonas.

ISebe Green ulwelwe

Ngenxa yoko, ngokukhawulezayo, izazinzulu ziye zagqiba ukuba ephilayo ngummeli we ubukumkani izityalo, njengoko ikwazi kuyondelelaniswe oluzimeleyo izinto zemvelo ekukhanyeni yaye iquka plastids eziluhlaza esiseleni.

Chlamydomonas (ifoto ibonisa imixholo yeseli) bobabo kwiqela ulwelwe eluhlaza, leyo ngokubanzi iqulathe ukuya ku-15 amawaka iintlobo. Izakufunyanwa kumaqumrhu amanzi amancinane. Amaninzi bona seliphantse ukugqitha kakuhle. Le nobulembu ayikho ukhetho kakhulu malunga ucoceko ngamanzi, ke ngoko, ngokubonakalayo Ukhuthaza kwindawo emdaka.

Chlamydomonas: isakhiwo Cell

Nangona lona lisiza bubonakaliswe iseli enye kuphela ubungakanani kakhulu, iye isakhiwo ngokwanelisayo ezintsonkothileyo, nako ukuphumeza zonke iinkqubo eziyimfuneko ebomini.

Chlamydomonas zeeseli okweqanda, kwaye maxa wambi pyriform. Xa emphethweni wayo wangaphambili liyafumaneka xa ibekwe misila ezimbini. Le intshukumo organelle. shell yeselula siqulathe izinto pectic kunye glycoprotein. Aba namandla okudlulisela amandla umaleko zangaphandle ephilayo.

Njengabanye iiseli ibekwe ngaphakathi kukho icytoplasm - umxholo semi-ulwelo lwangaphakathi, nto leyo enika ifomu yaye ekwenzeni ukutya. Uninzi lona lisiza kuthatha chloroplast. Kuye luphahlwe. Maxa wambi nayo ngokuba chromatophores. Kuyinto pyrenoids - ukuyilwa eziluhlobo protein, kuyo ezifakwe izondlo. Kwakhona kwi icytoplasm ngayo liliso ukukhanya-ethe - uhlobo "enezivamvo". Ibizwa ngokuba ibala.

Umsebenzi we contractile vacuole

Chlamydomonas - ukuphila emanzini. Ngoko ke, ukuba usoloko kuyimfuneko ukususa kulwelo okungena iseli ukusuka kokusingqongileyo. Oku kwenziwa organelles ezikhethekileyo - vacuole contractile. Kutheni amanzi zifakwa Chlamydomonas? Eyona nto kukuba umxholo ityuwa emanzini ngokuqhelekileyo iphezulu kakhulu iseli ngokwayo. Ngokutsho imithetho physics, nokungena ulwelo ukusuka kummandla kunye izinga ezisezantsi. ie kuseli lisiza. vacuole Contractile ukuphelisa ulwelwe ukusuka kulwelo kwemfuneko.

Features umsebenzi cell

Ngendlela ibele chlamydomonas mixotrophy. Oku kuthetha ukuba ukukhanya olukwazi photosynthesis. Ke xa kungekho iimeko eziyimfuneko ukuze kuyondelelaniswe kwezinto eziphilayo iba heterotrophs. It iyadika nje izondlo ukulungele ukuba emanzini.

Ukunqongophala phinda intshukumo yeseli ukufuma organelle kwaye zonke iinkqubo ebalulekileyo imisiwe. Ngoko ithwala iimeko ezimbi chlamydomonas.

Ulwelwe ukuvelisa kwenzeka ngeendlela ezininzi. Okunye rhoqo - maqanda. Kulo mzekelo, iseli kuguquka. It licwangcisa kwakhona i misila, ngoko intshukumo kube nzima. Ngaphakathi iiseli benza zoospores. Inani labo zingaqala-2 ukuya 8. iiseli motile. Baya kuphuma kumzimba koomama ukuze akhule kwaye uqale baphila elizimeleyo. Le nkqubo kukhulu kakhulu - oko iphindwe yonke imihla. Xa iimeko zivuma ngenxa yomphefumlo Chlamydomonas, iya kwi yokuzala ngokwesini. Ngaloo ndlela kwakheka ngaphakathi gametes zayo - iiseli lwegciwane. Bona bangena emanzini ekudibaneni ngababini. Ngenxa yoko, ukubunjwa elilodwa. Kule meko, ukuba phambi kokuqala iimeko zivuma. Ke elilodwa yahlukana, yaye ngamnye kubo kwenza abadala 4.

Ixabiso Chlamydomonas kwindalo kunye nobomi babantu

Ummeli we ulwelwe eluhlaza kukade icangcisiwe isifundo yophando elebhu. Uhlobo ixabiso layo ngenxa kweentyatyambo emanzini amileyo. Ingakumbi esebenzayo le nkqubo yenzeka yasekwindla nemvula yasentwasahlobo. Le ngamandla ulwelwe ixesha yokuzala omkhulu.

Njengoko a single-ezineseli nobulembu eluhlaza izidalwa ezincinane chlamydomonas, isiphathele isakhiwo kunokuba ezimbaxa kunye neenkqubo kubalulekile ukuba wenze kunokwenzeka ubukho layo kokusingqongileyo emanzini.