Cell Theory Timeline Notes Complete the following Cell theory timeline with scientist name and a summary of their contribution using the link found on Mrs. Koons website – unit 3 Honors Biology (http://www.softschools.com/timelines/cell_theory_timeline/96/ ). Date Scientist Contribution 1665 1683 1838 1839 1855 Questions – Answer the following questions based on your knowledge of the Cell Theory. 1. What invention made it possible to see cells for the first time? 2. What are the 3 parts of the Cell Theory?