Summary (1) is the basic unit of life. The three main parts of the cell are (2). and (4) (3) Plant cells are (5) in shape while animal cells are (6) or irregular in which shape. Plant cells have (7)_ provide support, protection and structure of the plant. Present also in plant cell is the (8)_ that serves as a site for photosynthesis. Also, plant cells have a bigger (9) than animal cells. Animal cells that function during cell have (10) division. The development of cell theory is through the scientific observations and investigations of scientists in our history such as (11) Robert van (13)Matias and (14)Rudolf_ (12) Anton (13) Theodor​