Awon to wa ni egbe yii ni awon eye aparo ati eye iga, adiye  igbo, eye bi adiye awo ati eye popondo.Won ti da awon toki ati adiye opipi mo pe iran won ni awon eye to dabi eye aparo ati eye iga .Awon itokasi.. 
Ìyípo yìí máa ń sọ àwọn ẹgbẹ́  amino méjì, ìkan lati NH4+ àti ìkan lati  Aspronísi, àti átọ́tọ́ carbon kan láti HCO3 sí àwọn ẹ̀tu tí kò ní máje urea ní iye "agbára ŃLÁ ń àwọn Àkẹrin phosphate ( ATP mẹ́ta mẹ́ta tí ó pín sí ADP méjì àti AMP ẹyọ kan).. 