Jaký je rozdíl mezi virem a bakterií????????
Bakterie je jednobuněčný organismus, kdežto vir je jednoduchá živá soustava nebuněčná.
Vir není schopen konat jednotlivé životní funkce.Viry můžeme pozorovat pouze elektronovým mikroskopem.Způsobují VIROVÁ onemocnění rostlin, živočichů i člověka.
-spalničky
-zarděnky
-neštovice
-dětská obrna
-žloutenka
-AIDS - smrtelně nebezpečné onemocnění Přenos:
-pohlavním stykem
-kapénkou
-krví
Některé viry mohou způsobit hromadění a nádorový růst buněk (způsobují rakovinu)
Bakterie
Nemají ohraničené nepravé jádro.Máji různé tvary:
-kulovitý (koky)
-tyčinkovitý (bacily)
-spirálovitý (spirochéty)
Jsou dva druhy bakterií : -choroboplodné a ty -co žijí v symbióze s člověkem.
Mohou způsobovat onemocnění:
-angína
-záněty dýchacího ústrojí
-tuberkulóza
-průjmová onemocnění
-tyfus
-cholera
-záškrt
-tetanus
Bakterie žijící s člověkem způsobují:
-mléčné kvašení
-rozkládají organický odpad
-půdní bakterie rozkládají odumřelé organismy .Tvoří humus!
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