{"id":90693,"date":"2018-02-13T04:10:00","date_gmt":"2018-02-13T04:10:00","guid":{"rendered":""},"modified":"2023-01-06T20:42:58","modified_gmt":"2023-01-06T20:42:58","slug":"protozoare-mici-creaturi-vii","status":"publish","type":"post","link":"https:\/\/cvnextjob.com\/index.php\/2018\/02\/13\/protozoare-mici-creaturi-vii\/","title":{"rendered":"PROTOZOARE &#8211; mici creaturi vii"},"content":{"rendered":"<div style=\"margin-top: 0px; margin-bottom: 0px;\" class=\"sharethis-inline-share-buttons\" ><\/div><h3 class=\"post-title entry-title\" itemprop=\"headline\" style=\"background-color: white; color: #333333; font-family: Oswald, sans-serif; font-size: 20px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; font-weight: normal; line-height: 1.1; margin: 0px 0px 10px; padding: 0px; position: relative;\"><\/h3>\n<div class=\"post-body entry-content\" id=\"post-body-5762329449199372851\" style=\"background-color: white; color: #555555; font-family: Roboto, Arial, Helvetica, sans-serif; font-size: 13px; line-height: 1.7; margin: 0px; overflow: hidden; padding: 0px; width: 615px;\">Protozoarele sunt cele mai mici animale de pe p\u0103m\u00e2nt : f\u0103r\u00e2me microscopice de via\u0163\u0103, compuse fiecare dintr-o singur\u0103 celul\u0103 ce con\u0163ine toate mecanismele supravie\u0163uirii independente.<br \/>Aceste organisme au fost probabil primele forme de animale ap\u0103rute pe p\u0103m\u00e2nt, de aceea sunt cunoscute sub numele de \u201cprimele animale\u201d sau protozoare. Majoritatea sunt organisme microscopice cu diametrul mai mic de un milimetru, invizibile cu ochiul liber. Fiecare este, \u00een esen\u0163\u0103, o pic\u0103tur\u0103 de citoplasm\u0103 gelatinoas\u0103, \u00eenchis\u0103 \u00eentr-o membran\u0103 care permite intrarea \u015fi ie\u015firea substan\u0163elor chimice simple, \u00een timp ce re\u0163in \u00een\u0103untru proteinele complexe. Citoplasma \u00eens\u0103\u015fi con\u0163ine o varietate de structuri responsabile pentru prelucrarea substan\u0163elor nutritive \u015fi controlul con\u0163inutului de ap\u0103, \u015fi un nucleu care ac\u0163ioneaz\u0103 asemenea unui creier, coordon\u00e2nd activit\u0103\u0163ile celulei. Protozoarele apar\u0163in regnului Protista, care include \u015fi algele unicelulare. Protozoarele sunt un subregn, const\u00e2nd din \u015fapte \u00eencreng\u0103turi : &#8211; \u00eencreng\u0103tura Sarcomastigophora include amibele \u015fi flagelatele. Exist\u0103 aproximativ 18.500 de specii. Printre specii se num\u0103r\u0103 : Euglena. &#8211; \u00eencreng\u0103tura Ciliophora const\u0103 din ciliate. Exist\u0103 circa 7.200 de specii. Printre specii se num\u0103r\u0103 : Didinium. &#8211; \u00eencreng\u0103turile Apicomplexa, Labyrinthomorpha, Microspora, Myxospora \u015fi Ascetospora formeaz\u0103 \u00eempreun\u0103 protozoarele parazite. Exist\u0103 aproximativ 5.600 de specii. Printre specii se num\u0103r\u0103 : Plasmodiul. Protozoarele prosper\u0103 \u00een num\u0103r imens \u015fi sunt o parte esen\u0163ial\u0103 a re\u0163elelor de hran\u0103 \u015fi a ciclurilor de descompunere ale lumii \u2013 dar, pentru c\u0103 sunt at\u00e2t de mici, abia dac\u0103 ne d\u0103m seama de existen\u0163a lor.<\/p>\n<p>EUGLENA<br \/>Prea m\u0103runt\u0103 pentru a fi v\u0103zut\u0103 cu ochiul liber, Euglena prezint\u0103 la microscop forma unui fus turtit, purt\u00e2nd \u00een v\u00e2rf un bici (flagel), cu care bate cu putere apa pentru a \u00eenainta mai rapid. Corpul ei unicelular con\u0163ine granule verzi de clorofil\u0103, ceea ce ne-o arat\u0103 capabil\u0103 s\u0103 \u00eendeplineasc\u0103 func\u0163ia complex\u0103 a fotosintezei. Datorit\u0103 mi\u015fc\u0103rilor ei independente \u015fi vioaie, ajutate de micul organ de locomo\u0163ie, ea ne sugereaz\u0103 mai mult lumea animal\u0103. Marea ciud\u0103\u0163enie a acestei plante o constituie modul ei de hr\u0103nire, c\u00e2nd animal, c\u00e2nd vegetal. A\u015fez\u00e2nd o Euglen\u0103 la \u00eentuneric \u015fi ad\u0103ug\u00e2nd \u00een mediul ei de via\u0163\u0103 substan\u0163e organice, ea \u00ee\u015fi pierde culoarea verde, devine aproape str\u0103vezie \u015fi \u00eencepe s\u0103 se hr\u0103neasc\u0103 ca un animal. Adus\u0103 din nou la lumin\u0103, \u00ee\u015fi rec\u00e2\u015ftig\u0103 granulele de clorofil\u0103 \u015fi revine la modul vegetal de hr\u0103nire. \u00cen ce regn putem \u00eencadra aceast\u0103 fiin\u0163\u0103 uimitoare? Dac\u0103 pentru stabilirea filia\u0163iei ei va trebui s\u0103-I urm\u0103rim rudele apropiate, ne vom \u00eencurca \u015fi mai r\u0103u. Unele neamuri se hr\u0103nesc cu substan\u0163e minerale \u015fi nu-\u015fi schimb\u0103 niciodat\u0103 culoarea verde; altele, dimpotriv\u0103, lipsite de clorofil\u0103, se hr\u0103nesc saprofit, ca orice animal. \u00centre sutele de mii de fiin\u0163e microscopice ce populeaz\u0103 apele, multe \u015fi dintr-un regn, \u015fi din altul prezint\u0103 asem\u0103n\u0103ri \u015fi grade de trecere spre Euglena. Ea face parte dintre acele numeroase vie\u0163uitoare \u00een care se \u015fterg parc\u0103 deosebirile dintre animale \u015fi plante \u015fi care constituie un fel de punte direct\u0103 \u00eentre unele \u015fi altele.<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Protozoarele sunt cele mai mici animale de pe p\u0103m\u00e2nt : f\u0103r\u00e2me microscopice de via\u0163\u0103, compuse fiecare dintr-o singur\u0103 celul\u0103 ce con\u0163ine toate mecanismele supravie\u0163uirii independente.Aceste organisme au fost probabil primele forme de animale ap\u0103rute pe p\u0103m\u00e2nt, de aceea sunt cunoscute sub numele de \u201cprimele animale\u201d sau protozoare. Majoritatea sunt organisme microscopice cu diametrul mai mic [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/cvnextjob.com\/index.php\/wp-json\/wp\/v2\/posts\/90693"}],"collection":[{"href":"https:\/\/cvnextjob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cvnextjob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cvnextjob.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cvnextjob.com\/index.php\/wp-json\/wp\/v2\/comments?post=90693"}],"version-history":[{"count":0,"href":"https:\/\/cvnextjob.com\/index.php\/wp-json\/wp\/v2\/posts\/90693\/revisions"}],"wp:attachment":[{"href":"https:\/\/cvnextjob.com\/index.php\/wp-json\/wp\/v2\/media?parent=90693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cvnextjob.com\/index.php\/wp-json\/wp\/v2\/categories?post=90693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cvnextjob.com\/index.php\/wp-json\/wp\/v2\/tags?post=90693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}