[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.morgus.cz\/proc-jsme-v-podstate-zavisli-na-kysliku\/#Article","mainEntityOfPage":"https:\/\/www.morgus.cz\/proc-jsme-v-podstate-zavisli-na-kysliku\/","headline":"Pro\u010d jsme v podstat\u011b z\u00e1visl\u00ed na kysl\u00edku","name":"Pro\u010d jsme v podstat\u011b z\u00e1visl\u00ed na kysl\u00edku","description":"Kdy\u017e se n\u00e1s n\u011bkdo zept\u00e1, jak\u00e9 jsou z\u00e1kladn\u00ed podm\u00ednky \u017eivota na Zemi, pak mnoho z\u00a0n\u00e1s mimo jin\u00e9 vyjmenuje tak\u00e9 p\u0159\u00edtomnost kysl\u00edku. A je pravdou, \u017ee je pro \u017eiv\u00e9 organismy nezbytn\u00fd. Je produkov\u00e1n zelen\u00fdmi rostlinami a d\u00fdchaj\u00ed jej v\u00a0podstat\u011b v\u0161echny \u017eiv\u00e9 organismy. Pokud k\u00a0n\u011bmu z\u00a0n\u011bjak\u00e9ho d\u016fvodu ztrat\u00ed p\u0159\u00edstup, udus\u00ed se a zem\u0159ou. To v\u0161e v\u00ed ji\u017e […]","datePublished":"2024-07-27","dateModified":"2024-07-27","author":{"@type":"Person","@id":"https:\/\/www.morgus.cz\/author\/#Person","name":"","url":"https:\/\/www.morgus.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/e5312f21b37eec0871f00feffaf403580ddf46c2d055479cc6723fb0100721f2?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/e5312f21b37eec0871f00feffaf403580ddf46c2d055479cc6723fb0100721f2?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"morgus.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.morgus.cz\/wp-content\/uploads\/dest1_2.jpg","url":"https:\/\/www.morgus.cz\/wp-content\/uploads\/dest1_2.jpg","height":0,"width":0},"url":"https:\/\/www.morgus.cz\/proc-jsme-v-podstate-zavisli-na-kysliku\/","about":["V\u011bda"],"wordCount":402,"articleBody":"Kdy\u017e se n\u00e1s n\u011bkdo zept\u00e1, jak\u00e9 jsou z\u00e1kladn\u00ed podm\u00ednky \u017eivota na Zemi, pak mnoho z\u00a0n\u00e1s mimo jin\u00e9 vyjmenuje tak\u00e9 p\u0159\u00edtomnost kysl\u00edku. A je pravdou, \u017ee je pro \u017eiv\u00e9 organismy nezbytn\u00fd. Je produkov\u00e1n zelen\u00fdmi rostlinami a d\u00fdchaj\u00ed jej v\u00a0podstat\u011b v\u0161echny \u017eiv\u00e9 organismy. Pokud k\u00a0n\u011bmu z\u00a0n\u011bjak\u00e9ho d\u016fvodu ztrat\u00ed p\u0159\u00edstup, udus\u00ed se a zem\u0159ou. To v\u0161e v\u00ed ji\u017e mal\u00e9 d\u00edt\u011b. Jen m\u00e1lokdo v\u0161ak v\u00ed, pro\u010d tomu tak vlastn\u011b je.\u00a0Faktem toti\u017e je, \u017ee kysl\u00edk je vysoce reaktivn\u00ed plyn, kter\u00fd je nav\u00edc jedovat\u00fd. Koneckonc\u016f, na st\u00e1rnut\u00ed m\u00e1 zdaleka nejv\u011bt\u0161\u00ed vliv pr\u00e1v\u011b postupuj\u00edc\u00ed oxidace organismu a s\u00a0t\u00edm spojen\u00e9 po\u0161kozov\u00e1n\u00ed vnit\u0159n\u00edch struktur bun\u011bk kysl\u00edkem. D\u00fdch\u00e1n\u00ed, a\u010d je pro n\u00e1s nezbytn\u00e9, n\u00e1s paradoxn\u011b pomalu zab\u00edj\u00ed. Je tedy dobr\u00e9 se pod\u00edvat, pro\u010d se vlastn\u011b evoluce vydala touto cestou.\u00a0\u00a0Prvn\u00ed \u017eiv\u00e9 organismy, primitivn\u00ed proto-bakterie a proto-\u0159asy, byly zcela anaerobn\u00ed. A nen\u00ed divu, v\u00a0t\u00e9 dob\u011b je\u0161t\u011b v\u00a0na\u0161\u00ed atmosf\u00e9\u0159e \u017e\u00e1dn\u00fd kysl\u00edk nebyl. Ten za\u010dal b\u00fdt produkov\u00e1n a\u017e ve chv\u00edli, kdy se u prvn\u00edch \u0159as a sinic objevila fotosynt\u00e9za jako efektivn\u00ed zp\u016fsob z\u00edsk\u00e1v\u00e1n\u00ed energie. Produkce kysl\u00edku pak byla vedlej\u0161\u00edm \u00fa\u010dinkem. A jeliko\u017e jej v\u00a0atmosf\u00e9\u0159e st\u00e1le p\u0159ib\u00fdvalo, m\u011blo to dalekos\u00e1hl\u00e9 d\u016fsledky.\u00a0\u00a0Nejen\u017ee se na\u0161e obloha stala modrou, ale tento jedovat\u00fd plyn vedl k\u00a0jednomu z\u00a0prvn\u00edch velk\u00fdch vym\u00edr\u00e1n\u00ed. Valn\u00e1 v\u011bt\u0161ina tehdy \u017eij\u00edc\u00edch organism\u016f zahynula, a ty, co p\u0159e\u017eily, se s\u00a0n\u00edm musely nau\u010dit pracovat. Uk\u00e1zalo se v\u0161ak, \u017ee se vzhledem k\u00a0jeho vysok\u00e9 reaktivit\u011b jednalo o v\u00fdborn\u00fd zdroj energie \u2013 a \u010d\u00edm v\u00edce j\u00ed dan\u00fd organismus m\u011bl k\u00a0dispozici, t\u00edm l\u00e9pe se mohl vyv\u00edjet a b\u00fdt \u00fasp\u011b\u0161n\u011bj\u0161\u00ed.\u00a0Tak se postupem \u010dasu stalo, \u017ee se \u017eivot na na\u0161\u00ed planet\u011b stal na kysl\u00edku z\u00e1visl\u00fdm, by\u0165 n\u00e1s v\u00a0podstat\u011b pomalu zab\u00edj\u00ed. To je koneckonc\u016f tak\u00e9 d\u016fvod, pro\u010d nem\u016f\u017eeme b\u00fdt v\u00a0p\u0159\u00edli\u0161 okysli\u010den\u00e9m prost\u0159ed\u00ed. A je jasn\u00e9, \u017ee se z\u00e1vislosti na n\u011bm \u017eivot na na\u0161\u00ed planet\u011b rozhodn\u011b nezbav\u00ed.                                                                                                                                                                                                                                                                                                                                                                                        5\/5 - (6 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Pro\u010d jsme v podstat\u011b z\u00e1visl\u00ed na kysl\u00edku","item":"https:\/\/www.morgus.cz\/proc-jsme-v-podstate-zavisli-na-kysliku\/#breadcrumbitem"}]}]