where does Metabolism occurs in
Animal Metabolism. The chemical reactions, which occur in the cells of an animal body, are called as an animal's metabolism. In animal cells, mitochondria and the nucleus are the sites where an energy production reaction takes place.Cellular respiration is the type of metabolism that takes place in all animal cells.nimal Metabolism. The chemical reactions, which occur in the cells of an animal body, are called as an animal's metabolism. In animal cells, mitochondria and the nucleus are the sites where an energy production reaction takes place. Cellular respiration is the type of metabolism that takes place in all animal cells.