1. Cell Theory
Explain to students that to start the study of cells we have to learn about the foundations of cells and how they were discovered, as well as the development of technology that is used to study cells. In microscope ppt, will explain the development of better technology.

2. Vocabulary Key Concepts Prokaryotic Eukaryotic Organelle
WHO is Responsible for coming up with the Cell Theory?
WHAT IS THE CELL THEORY and how does it apply to living things?
WHAT are the similarities and differences between Prokaryotic and Eukaryotic Cells?
Vocabulary
Prokaryotic
Eukaryotic
Organelle
Mention the vocabulary and key concepts when talking about this slide.

3. Robert Hooke (1635-1703) English Scientist
Developed the First Compound Microscope
These first two scientist are important to the discovery of cells and development of the microscope.

4. Robert Hooke Looked at thin slices of cork
Saw that there were small, hollow compartments that resembled the rooms that monks lived in.
Developed the term “cell”
Cork was dead cells so they were hollow, so that meant that he did not see the organelles that show how cells are living.

5. Anton van Leeuwenhoek (1632-1723)
Dutch tradesman
Ground lenses as a hobby and improved microscope
Was the first to see living cells
Microorganisms found in pond water
Blood cells and his own teeth

6. Matthias Schleiden (1804-1881)
German botanist
Observed and proposed that all plants are made of cells
The next three scientist were important to the development of cell theory.
What does a botanist study? What are some things that you think are found in plant cells?

7. Theodor Schwann (1810-1882) German zoologist
Saw structural similarities between animal and plant cells
Determined animals are made of cells
Stated all living things are made of cells.
What is a zoologist?
How does this discovery related to one of our characteristics of life?
What do you think animal cells have?

8. Rudolf Virchow ( )
German Doctor
Observed that cells reproduce from other cells
Observed that animal cells are only found in animals and plant cells are only found in plants
Do you know the name for the process of cell division?
Why do you think that plants can only come from plants, and animals can only come from animals?

9. Cell Theory
These three scientists discoveries led to the development of the cell theory.
The 3 Parts of the Modern Cell Theory are:
The cell is the basic unit of life
All organisms are made of cells
All existing cells come from other living cells
Describe how what we are seeing in this list of cell theory tenants relates to what we know about life and biology in general.

10. Cell Theory Timeline 1674 1838 1839 1855 1665 Hooke-Identified cells
Leeuwenhoek- Observed Living cells
Schleiden- Plants are made of cells
Schwann- All living things come from cells
Virchow- All cells come from other cells
This time line shows the details of when different discoveries were made related to cells. This should show students how big the gap was from the discovery of cells and microorganisms using the first microscopes, but then how technology improved led to better understanding of cell behavior.

11. Organization of Life Organism Organ Systems Organs Tissues Cells
Use this to do a review of the organization of life so that students are covering this concept again.

12. Organization of Life Organisms can be unicellular or multicellular
Multicellular organisms are organized into complex structures
Multicellular organisms have specialized cells to perform a single function.
What are some human cells specialized to do?
Unicellular- Organisms composed of one cells, ex. Bacteria, and protozoa
Multicellular- Organisms composed of many cells, including cells with different functions, ex. Humans, plants, fungi

13. Types of Cells
Prokaryotic cells – primitive cells that have little internal structure.
Eukaryotic cells – evolved from prokaryotic cells and contain numerous internal structures.
Organelles – structures in the cell responsible for carrying out specific functions. “cell organs”
What are some organelles found in cells and what are their functions?
Pro=First
Karyotic=Cell

14. Prokaryotic Cells
Do NOT have nucleus or other membrane bound organelles
DNA found in the cytoplasm
Always unicellular
Very simple in structure-Cell wall or membrane surrounding cytoplasm
Earth’s most abundant organism
Have a nucleoid region where dna is located
Examples are bacteria

15. Eukaryotic Cells Arose from Prokaryotic cells
Do HAVE a nucleus and other membrane bound organelles.
Nucleus contains DNA.
Can be uni- or multicellular

16. Eukaryotic Cells
Structure divided into 3 areas: NUCLEUS, CYTOPLASM, AND CELL MEMBRANE.
Eukaryotic cells have numerous organelles

17. Unicellular vs Multicellular
Unicellular- Organisms composed of one cells, ex. Bacteria, and protozoa
Multicellular- Organisms composed of many cells, including cells with different functions, ex. Humans, plants, fungi