Download Scientists not found in the book: Zacharias Janssen 1590: Janssen`s

Cell History Timeline Activity
Directions: You will be creating an accordion foldable timeline to show the history
behind and discovery of the cell and its organelles. You will need to use the Biology book
provided to research the following contributors and develop an accurate timeline.
The timeline should include:
1. The scientists below and their contributions to cell theory
o Gregor Mendel
o Hans &
Zacharias
Janssen
o Rosalind
Franklin
o Francesco
Redi
o Anton Van
Leeuvenhoek
o Walter
Fleming
o Robert Hooke
o Rudolph
Virchow
o Francis Crick &
James Watson
o Robert
Brown
o Thomas
Hunt
Morgan
o Marcello
Malpighi
o Matthias
Schleiden
o Theodore
Schwann
2. Have dates clearly show and in chronological order
3. Include 5 pictures of the scientists or their contribution
4. BE NEAT & LEGIBLE!! With the final product posted in your spiral
Scientists not found in the book:
Zacharias Janssen
1590: Janssen’s invention of the
microscope, with the aid of his
father Hans, allowed English
scientist Robert Hooke to use a
primitive microscope to view the
cell walls of a piece of cork in
1663.
Francisco Redi
1668:
Disproved
theory
of
spontaneous generation using flies
and rotten meat
Robert Brown
1833: Discovered nucleus in plant
cells
Marcello Malpighi
1666: First person to see red blood
cells
Thomas Morgan Hunt
1908: Showed the genes could be
found on chromosomes
Walter Fleming
1882: Examined stained cells and
finds rods he calls chromosomes