1. Features of all Cells

2. Anton von Leuwenhoek Danish scientist
first to look at cells with a compound microscope
called these animal-like cells animalcules

3. Robert Hooke English scientist first to look at plant cells
observed a thin slice of cork
saw “a lot of little boxes”
coined the term “cell”

4. Cell Theory
model that explains what we know about cells and predicts the outcomes of future observations

5. Cell Theory All living things are composed of cells.
Cells are the units of structure and function in living organisms.
All new cells come from cells that already exist.

6. Common Features of all Cells
Cell membrane
Cytoplasm
Cytoskeleton
Ribosomes
Genetic Material
Limited Growth

7. Common Features of all Cells
1. Cell membrane
encloses the cell and separates the cytoplasm from its surroundings
2. Cytoplasm
fluid-filled interior of the cell

8. Common Features of Cells
3. Cytoskeleton
fibers that help give cells shape, move, and divide
4. Ribosomes
cell structures where proteins are made

9. Common Features of all Cells
5. Genetic Material
all cells contain ___________

10. Common Features of all Cells
5. Genetic Material
all cells contain DNA
however some specialized cells later lose their DNA (human red blood cells)
6. Limited growth
growth of the cell is limited before it must divide

11. Single vs. Multicellular Organisms
Single Celled Organisms
organisms that can achieve all of life's functions as one cell
Examples: Bacteria, yeast, amoeba

12. Single vs. Multicellular Organisms
a collection of one or more cells that work together to survive
Examples: All plants and animals, most fungi

13. Single vs. Multicellular Organisms
When a unicellular organism divides into two cells, what property of life is visible?
Metabolism
Reproduction
Heredity
Homeostasis
Responsiveness
Made up of cells
Growth and Development
2. Reproduction

14. Single vs. Multicellular Organisms
When a multicellular organism divides into two cells, what property of life is visible?
Metabolism
Reproduction
Heredity
Homeostasis
Responsiveness
Made up of cells
Growth and Development
7. Growth and Development

15. Two Cell Types
Prokaryotes
Eukaryotes

16. Prokaryotes Features genetic material is NOT contained in a nucleus
nucleus - special membrane-bound structure
Pro-Carry-Oats

17. Prokaryotes Features includes all bacteria only unicellular
have adapted to many extreme environmental conditions
only unicellular
Pro-Carry-Oats

18. Prokaryotes Features thought to be the oldest forms of life
have cell wall
feature that provides structure and support

19. Prokaryotes Features
most do not have internal membranes (no compartments)
small in size

20. Prokaryotes Size

21. Prokaryotes Size

22. Prokaryotes Features
most do not have internal membranes (no compartments)
small in size
found in Domain Archaea and Domain Bacteria

23. Eukaryotes Features
contain a nucleus which separates the genetic material from the rest of the cell
You-Carry-Oats

24. Eukaryotes Features do have internal membranes
posses compartments surrounded by membranes called organelles
organelles
“little organs”
organelles are to a eukaryotic cell like organs are to a human body
each type of organelle has a unique function

25. Eukaryotes larger in size may be unicellular OR multicellular
found in Domain Eukarya which includes:
Animals
Plants
Fungi
Protists

26. Other Resources
Textbook
Pages
links on wiki