Relacionar Columnas 4.4 Cell TheoryVersión en línea History and Basic concepts of cell theory por Jorge Arizpe 1 Postulate 3: All cells come from ________ 2 Scientist who observed cells in cork for the first time. He calls them celle. 3 He was the first scientist to observe live microorganisms. 4 Postulate 2 The cell is the structural unit and the _______ 5 Postulate 1: All the organisms ..... 6 I conclude after studying plant tissues that all plants are made up of cells. 7 He said that all animal tissues are composed of cells 8 He said that all cells are produced by dividing existing cells.