In contemporary chemistry are using both “classical” - “molecular chemistry”, “solid state chemistry, and new notions (“Paradigms“) like: “supramolecular chemistry” (introduced by JeanMarie Lehn, Nobel Laureate in Chemistry, 1987), resulting from the combination of large numbers of indefinitely components; “proteomics”(inserted by Marc Wilkins, 1994), considered the next step in genomics study of biological systems, “metalomica “(introduced by Szpunar, 2005), which seeks to study metalloproteins or metal-containing biomolecules;“green chemistry” - that encourages the design, development and implementation of chemical products and processes that would minimize or eliminate the use and / or generation of toxic, hazardous to humans or the environment (pollutants).The contemporary chemistry permanently changes its face, a new fields and paradigms appear, it more and more address to understanding the chemistry of the normal vital and pathological processes and offers an special and attractive research field for those who is dedicated to it.