1/ all living organism are made up of cells: which can be unicellular or multicellular organisms.
2/ cells are the basic structural and functional usnits for living things: so as it was was mentioned in 1, an unicellular organism in consisited of one cell which will be probably functioning, and for multlicellular organisms they contain more than one of functioning cell.
3/ all cells comes from pre-existing cells: the process of which cells reproduce is by splitting the existing cell into 2 cells, or in some cases grow a part of it until it becomes a fully functioning cells, which is dependent on the original cell until it becomes independent.
