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Question

The cell theory states that all living things are composed of one or more cells that carry out the functions needed to support life. The cell theory also states that ---

Answer

Cells are produced by preexisting cells. Explanation: As per the concept of cell theory, "all living organisms are made up of one or more cells, where the cell is the fundamental unit of life, and new cells are formed by existing cells" (Lumen Learning). The cell serves as the basis of life. Certain beings comprise only one cell while other beings are made up of many cells, which indicates they are multicellular organisms. In the case of multicellular organisms, fresh cells are generated through bifurcation of preexisting cells.