The different structures that form part of a cell.
Grouping of different tissues that constitute a structural and functional unit.
Set of organs and tissues that perform a common function: Example: the nervous system.
Smallest part of a compound; is formed by the union of 2 or more atoms.
It is the structural and functional unit of every living being.
Smallest part of an element (Carbon, oxygen, Hydrogen); are formed by subatomic particles.
They are the principal molecules of living beings. They are divided in carbohydrates, lipids, proteins and nucleic acids.
It can be unicellular or multicellular. It has the particular characteristics of a species.
Set of cells with a specific function.
Level of organization of matter formed by protons, neutrons and electrons
