Kano kawuka kali mu ttuluba ly’obwo obumanyiddwa ng’obusirikitu akavaako endwadde kyokka nga keeyubulira oba okwalulira munda wa butoffaali (cell) obulamu obw’ekitonde ekirala(kwe kugamba nti ku lwako kokka, akawuka kano tekasobola kweyalula, kye kakola okweyalula, keegatta ku butoffaali bulala obulina obusobozi okweyaluza bwokka. Mu mbeera eno, buli akatoffaali kali lwe keeyalula, nga n'akawuka kano aka viyiraasi keeyalula.) Olw'ensonga eyo gye tulabye waggulu,viyiraasi zisobola okukosa ebitonde by’obulamu eby’enjawulo omuli ebisolo, ebimera n’obuwuka obulala obwa bakitiiriya ne archea.