Cell Theory- SENIOR HIGH SCHOOL- BIOLOGY 1.ppt

POWERPOINT PRESENATION

1. BIOLOGY 1
LOVEJOY TIÑA

2. Carefully observe the image
and identify what it
represents based on its
features, context, and
details.

9. Cell
-the basic unit of life

10. Where does the
cell come from?
Where did the first
cell originate?

11. study of the cell led to the
development of the cell theory

12. Directions: Match the scientist in Column A with their
contribution in Column B. Write the letter of the correct
answer.
A
_______1. Robert Hooke
_______2. Antoine van Leeuwenhoek
_______3. Matthias Schleiden
_______4. Rudolf Virchow
B
A. Proposed that all cells come from pre-
existing cells
B. Discovered cells by observing cork
under a microscope
C. Observed living cells such as bacteria
and protozoa using a simple microscope
D. Stated that all plants are made of cells

13. Cell theory
The scientific theory that all living organisms
are made of cells as the smallest functional
unit.

14. Aristotle
334 B.C.E.
Observed nature directly.
He classified all known organisms as either
plants or animals.
B.C.E.= Before Common Era

15. Hans & Zacharias Janssen
1595
Produced the first compound microscope by
lining up 2 lenses.

16. Robert Hooke
1665
- Micrographia
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.

17. Antonie van Leeuwenhoek
•1675
•Observed living cells through a simple
microscope.
•animacules

18. Matthias Schleiden
1838
-botanist
-Discovered that plants were made of cells.

19. Theodor Schwann
1839
-zoologist
-States “all animals are made of cells.”

20. William Henry Perkin
•1856
•Develops an intense purple dye, which is used to
stain slides.

21. Rudolph Virchow
•1858
•FATHER OF PATHOLOGY
•Rudolph Virchow states…
“Where a cell exists, there must
have been a preexisting cell.”

22. 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.

23. Key Points
•The cell theory describes the basic properties of all cells.
•The three scientists that contributed to the development of cell
theory are Matthias Schleiden, Theodor Schwann, and Rudolf
Virchow.
•A component of the cell theory is that all living things are
composed of one or more cells.
•A component of the cell theory is that the cell is the basic unit
of life.
•A component of the cell theory is that all new cells arise from
existing cells.

24. 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.