1. The Cell Theory & Microscopes

2. Microscopes
1590 – Janssen put 2 magnifying glasses together in a tube = COMPOUND MICRO.
Van Leewenhoek – made micro with 270x magnification power

3. Microscopes
COMPOUND LIGHT MICROSCOPE = lets light pass through object, enlarges object
Eye piece: 10x times 40x objective =
ELECTRON MICROSCOPE = magnetic field bends beams of electrons to magnify (1,000,000x)
Open to p. 48 and put the microscopes in order by magnification power and write why they are beneficial

4. The Cell Theory Robert Hooke – 1665 (English Scientist)
Cork – “cell”
Antoine van Leeuwenhoek (Dutch Scientist)
Microscopic Animals - “wee beasties”
Matthias Schleiden & Theodor Schwann – (German)
Put together the cell theory
Rudolf Virchow – 1858 (German Biologist)
3rd part of cell theory

5. The Cell Theory All living organisms are made up of one or more cells.
The cell is the basic unit of life.
All cells come from preexisting cells.

6. Examples of Cells Amoeba Proteus Plant Stem Bacteria Red Blood Cell
Nerve Cell

7. 2 Types of Cells Prokaryotic Eukaryotic
The drawings to the left represent general cell types. The yellow cell will represent bacteria (an organism of the Kingdom Monera- Prokaryotic cell) as well as a protozoan (an organism from the Kingdom Protista-eukaryotic cell). The cell to the right will represent plant, animal and some cells of the Kingdom Protista.

8. 1 . Prokaryotic Do not have structures surrounded by membranes
Few internal structures
One-celled organisms, Bacteria

9. Eukaryotic Contain organelles surrounded by membranes
Most living organisms
Plant
Animal

10. To Review Which microscope would magnify an cheek cell the most?
Compound
Electron
A microscope with an eyepiece that magnifies 10x and an objective lens that magnifies 50x has a total magnification of? 5 50 60
500

11. To Review
Which of the following statements is not a part of the cell theory?
All living organisms are made up of one or more cells.
The cell is the basic unit of life.
New cells can develop on their own.
A cheek cell has a nucleus surrounded by a membrane. What kind of cell is it?
Eukaryotic
Prokaryotic

12. Levels of Organization adapted from science-class.net

13. ATOMS
Smallest part of matter
NON-living

14. Molecules
2 or more bonded atoms
Form compounds
NON-living

15. Macromolecule
Very large molecules
Proteins, fats, carbohydrates, nucleic acids
NON-living

16. Organelles
“Tiny organs”
Made of macromolecules

17. Cell
Made of organelles
Basic unit of structure & function
LIVING

18. Tissue
The same kind of cell working together to perform a function
Living

19. Organs
Tissues that work together to perform a function
Living

20. Systems
Organs that work together to perform a function
Living

21. Organism
Entire living things (organisms)
Usually made of systems
May be a single cell
Living

22. To Review
Which of the following is a group of tissues working together to perform a function?
Cells
Organ
System

23. To Review
Which of the following is a group of cells working together to perform a function?
Tissue
Organ
System

24. To Review
Which of the following is a group of organs working together to perform a function?
Cells
Tissue
System