1. 3 The General features of metabolism Occurs in linear, branched or circular pathway Highly interconnected("Every road leads to rome) Highly regulated to achieve the best economy Balanced supply and demand) The number of reactions is large(over 1000)and the number of types of reactions is relatively small Well conserved during evolution: reflecting the unity of the life phenomena(" what happens in bacteria happens in human being)1.3 The General Features of metabolism • Occurs in linear, branched or circular pathways; • Highly interconnected (“Every road leads to Rome”). • Highly regulated to achieve the best economy (“Balanced supply and demand”). • The number of reactions is large (over 1000) and the number of types of reactions is relatively small. • Well conserved during evolution: reflecting the unity of the life phenomena (“what happens in bacteria happens in human being”)