Ko tētahi wāhanga matua o te pūtau tipu me te pūtau kīrehe (ko te pūtau tangata anō hoki). Kei te karihi ngā ira motuhake o te rauropi, e puta ai ōna āhuatanga tuku iho. Ko te karihi te wāhanga whakahaere i te mahi a te pūtau.
An important part of a plant or animal cell (including humans). The nucleus contains the special genes which carry the inherited information of the organism. The nucleus is the part of the cell which controls its function.