Respuesta :
Answer: The correct answer for blank is- all living things are made up of a cell or cells, and all cells come from other cells.
Cell theory was given by Schleiden and Schwann in 1839. According to this theory,
- Cell is considered as a basic structural and functional unit of all life forms.
- All life forms are made up of one or more cell.
- Cell arise from other cell that already existed before.
Thus, option first and second are the right answer.
