Which theory explains the following statements: "All living entities are made up of cells and cell products" and "All cells develop from prior cells"?

The theory that best explains the statements is the Cell theory. The Cell theory was first proposed by two scientists, Matthias Jakob Schleiden and Theodor Schwann, in the 19th century. According to the Cell theory, all living beings are made up of one or more living cells, which serve as the structural and functional unit of all living species. This theory consists of two fundamental principles: firstly, all living entities are composed of one or more cells, and secondly, all cells develop from prior cells.