Warm Up
Get your notebook. Grab a notecard from the front. Put your name on
it. Answer the following questions:
1. Looking in your notes, what is the scientific definition for work?
NOT THE FORMULA!!!!
2. Which ramp would require the least amount of work?
A.
B.
Cell Theory
•All living things are made of cells.
•Cells are the basic units of structure and
function in all living things.
(structure = form; function = purpose)
•Cells come from pre-existing cells.
Aristotle
334 B.C.E.
Observed nature directly.
He classified all known organisms as either
plants or animals.
B.C.E.= Before Common Era
Hans & Zacharias
Janssen
1595
Produced the first compound microscope by
lining up 2 lenses.
Robert Hooke
1665
Observed living matter from a piece of cork
through a compound microscope, which reveals
empty cells.
He is the first to call the spaces in the cork
“cells” which means little rooms.
Anton van
Leeuwenhoek
1675
Observed living cells through a simple
microscope.
Matthias Schleiden
1838
Discovered that plants were made of cells.
Theodor Schwann
1839
States “all animals are made of cells.”
William Henry
Perkin
1856
Develops an intense purple dye, which is used to
stain slides.
Rudolph Virchow
•1858
•Rudolph Virchow states…
“Where a cell exists, there must
have been a preexisting cell.”
Create a Cell Timeline
Label the timeline with the dates, scientist names, and
details of the important discoveries.
The earliest date should be on the left and the most recent
on the right.
8 events & 8 pictures
Graded on neatness, accuracy, and use of color.
List Cell Theory and the 3 parts of the Cell Theory.