Hello :P, the answer to your question from my thoughts and opinions are stated in this answer....hope this helps.
So to begin with cells and their basic meaning, All cells come from pre-existing cells by cell division. Cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells. Cells are the basic unit of structure in all organisms and also the basic unit of reproduction.