How can we know that microorganisms comprising several groups and several species, are growing and producing their metabolites as desirable products for human How can we know that microorganisms comprising several groups and several species, are growing and producing their metabolites as desirable products for human Solution Scientist has been researching and found many metabolites which can be useful to humans. Micro-organisms are the surrounded by chemical signals. They produce small molecules which are popularly known as metabolites for their growth and development. Certain metabolites which they produce are used to stop the growth of pathogens. Many antibiotics (Erythromycin, penicillin) are also produced by these microbes to protect themselves from competitors. A wide range of chemicals are produced in the form of these metabolites. They are not only produced to kill but certain metabolites are used to act on activity of particular chemical to affect the cellular pathway e.g.: metabolite Compactin inhibits an enzyme in sterol synthesis pathway. This led to the production of whole new class of metabolites called statin. Micro-organisms can modify and produce many different combinations of chemicals and manipulate cellular pathways. There are certain microbes which can produce mixtures of analogues and not just 1 class of metabolites. Also antagonists of metabolites are not yet found so they are well known for their environment control. Thus microorganisms and their metabolites are the desirable products for humans.