1. Bacteria, Animal, and Plant Cells
Cell Theory
Bacteria, Animal, and Plant Cells

2. It is the basic unit of living things.
What is a Cell?
A cell is the smallest unit that is capable of performing life functions.
It is the basic unit of living things.

3. Discovery of Cells Robert Hooke (mid-1600s) Observed sliver of cork
Saw “row of empty boxes”
Coined the term cell

4. Cell Theory All living things are made up of cells.
Cells are the smallest working units of all living things.
All cells come from preexisting cells through cell division.

5. Characteristics of All Cells
A surrounding membrane
Protoplasm – cell contents in thick fluid
Organelles – structures for cell function
Control center with DNA

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

7. Two Types of Cells
Prokaryotic
Eukaryotic

8. Prokaryotic Cells First cell type on earth
Cell type of Bacteria and Archaea

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

10. Prokaryotic Cells No membrane bound nucleus
Nucleoid = region of DNA concentration
Organelles not bound by membranes

11. Eukaryotic Cells Nucleus bound by membrane
Include fungi, protists, plant, and animal cells
Possess many organelles
Protozoan

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

13. Bacteria are prokaryotes! Animals and plants are eukaryotes!
Cell Organization
Prokaryotic Cells
No membrane around nuclear material
Ex.- bacteria and pond scum
Eukaryotic Cells
Has nucleus with membrane around it
Ex.- animal or plant cell
Bacteria are prokaryotes!
Animals and plants are eukaryotes!
Pamela Nell 7th Life Science