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The digestion system has this job.
digestion
digestive
The nerve cell adhesion molecules do a number of things which include releasing energy for metabolic activities. This will also be responsible for the distribution of E-cadherin and N-cadherin in nervous system that are developing.
http://wiki.answers.com/FAQ/6462excretory
Digestive system
The reproductive system is responsible for conception and childbearing.
The excretory system is responsible for the elimination of waste
this is the system of playing cricket and the system of gusthy
The endocrine system controls the body by means of chemical molecules called hormones.
Proteins, nucleic acids, lipids and carbohydrates are four macromolecules of our body. They have different role for each of them to run our life. In case of proteins, they build our body, immune system, and make functional molecules.
George Washington was responsible for the creation of the judiciary system.