Matching Pairs 3.1 From Subatomic to IndividualOnline version Levels of organization from the subatomic level to the individual. by Jorge Arizpe 1 Smallest part of an element (Carbon, oxygen, Hydrogen); are formed by subatomic particles. 2 They are the principal molecules of living beings. They are divided in carbohydrates, lipids, proteins and nucleic acids. 3 Set of cells with a specific function. 4 Set of organs and tissues that perform a common function: Example: the nervous system. 5 Level of organization of matter formed by protons, neutrons and electrons 6 Grouping of different tissues that constitute a structural and functional unit. 7 Smallest part of a compound; is formed by the union of 2 or more atoms. 8 It can be unicellular or multicellular. It has the particular characteristics of a species. 9 It is the structural and functional unit of every living being. 10 The different structures that form part of a cell.