Maganin narkewa na waje

Maganin narkewa na waje
digestion (en)
Bayanai
Hannun riga da	intracellular digestion (en)

Maganin narkewar phototropic na waje tsari ne wanda saprobionts ke ciyarwa ta hanyar ɓoye enzymes ta hanyar membrane na tantanin halitta a kan abinci. Enzymes suna haɓaka narkewar abinci, watau, watsawa, sufuri, osmotrophy ko phagocytosis. Tun da narkewa yana faruwa a waje da tantanin halitta, an ce yana waje da tantancewa. Yana faruwa ko dai a ciki lumen na Tsarin narkewa, a cikin rami na ciki ko wani sashi na narkewa. A lokacin narkewar extracellular, abinci yana rushewa a waje da tantanin halitta ko dai ta hanyar inji ko tare da acid ta hanyar kwayoyin musamman da ake kira enzymes. Sa'an nan kuma sabbin abubuwan gina jiki da suka lalace za su iya shawo kan sel da ke kusa. Mutane suna amfani da narkewar extracellular lokacin da suke cin abinci. Hanyoyin su suna niƙa abinci, enzymes da acid a cikin ciki suna narkar da shi, kuma ƙarin enzymes a cikin ƙananan hanji suna karya abinci zuwa sassa waɗanda ƙwayoyin su zasu iya amfani da su. Magungunan extracellular wani nau'i ne na narkewa da aka samu a cikin dukkan saprobiontic annelids, crustaceans, arthropods, lichens da chordates, gami da vertebrates.

Fungi sune kwayoyin heterotrophic. Abinci na Heterotrophic yana nufin cewa ƙwayoyin cuta suna amfani da tushen makamashi na kwayoyin halitta, kayan kwayoyin halitta ko kwayoyin halitta. Ana samun makamashi daga rushewar haɗin sunadarai tsakanin carbon da ko dai carbon ko wasu abubuwan da ke cikin mahadi kamar ion phosphate. Tushen makamashi na waje na iya zama sukari mai sauƙi, polypeptides ko ƙarin rikitarwa carbohydrate.

Fungi na iya shan ƙananan kwayoyin ne kawai ta bangon su. Don ƙwayoyin cuta su sami bukatun su na makamashi, suna samun kuma suna shan kwayoyin halitta da suka dace da bukatun su, ko dai nan da nan ko bin wasu nau'ikan raguwar enzyme a waje da Tallus. Ana shawo kan ƙananan kwayoyin, ana amfani da su kai tsaye ko sakewa (sake canzawa) zuwa kwayoyin halitta a cikin tantanin halitta.