1. FOUNDERS OF CELL THEORY

2. ROBERT HOOKE
Robert Hooke used a _______ microscope to study ________ (obtained from dead oak bark)
light
cork

3. ROBERT HOOKE
He called them _______ because they reminded him of the small rooms ________ lived in at the monastery
cells
monks

4. ROBERT HOOKE ________ ARE THE BASIC UNITS OF ALL LIVING THINGS!!!
Cells
Hooke's Microscope

5. Matthias Schleiden
Matthias Schleiden is a German scientist who studied ________
plants

6. Matthias Schleiden He concluded that ______________________________
all plants are
composed of cells

7. Theodor Schwann
Theodor Schwann is a German scientist who studied __________
animals

8. Theodor Schwann He concluded that ______________________________
all animals are
composed of cells

9. CELL THEORY
The CELL THEORY is made up of ___ parts. 3

10. CELL THEORY MEMORIZE THIS!!
1) All organisms are composed of one or more cells.
2) The cell is the basic unit of structure and organization of organisms.
3) All cells come from pre-existing cells.
MEMORIZE THIS!!

11. Anton van Leeuwenhoek
Leeuwenhoek lived at the same time as Robert Hooke, (1600’s) and used a simple light microscope to view object.
Over the next 200 years, scientists improve microscopes and develop a compound light microscope.
Which uses a series of lenses to magnify objects up to 1500X.

12. Electron Microscopes First used in the 1930’s & 1940’s
Uses a beam of electrons to magnify up to 500,000X
Structures within cells can be seen
Specimens must be examined in a vacuum
Two basic types:
Scanning (SEM)
Transmission (TEM))

13. How an Electron Microscope Works

14. Image of a hydrothermal worm taken with an Electron Microscope

15. A single Carbon atom

16. Eyepiece
Body tube
Coarse Adjustment
Fine Adjustment
Arm
Base
Light Source
Diaphram
Stage
Stage clip
Low power objective
High power objective