1. Cell Types 1
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2. Cell Types 2 Basic Types of Cells Prokaryotic Eukaryotic
Only bacteria Plant Animal
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3. Two Types of Cells
1. Prokaryotic Cells: Very small, simple cells that lack a nucleus & membrane-bound organelles.
2. Eukaryotic Cells: Large, complex cells that contain a membrane-bound organelles & a nucleus
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4. General Biology

5. Prokaryotic Cells Ancient cells were prokaryotes
They have a cell wall surrounding their cell membrane.
The only living example = bacteria
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6. General Biology

7. Bacteria Song!
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8. General Biology

9. Eukaryotic Cells
The cytoplasm of eukaryotes contains specialized “tiny organs” called organelles
Each organelle is a specialized compartment that carries out a special function in the cell.
Many of these organelles are membrane-bound.
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10. Eukaryotic Cell-Animal
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11. Eukaryotic Cell-Plant
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12. Organelles A eukaryotic cell is like a building with many rooms.
Having organelles (rooms) allows special activities to be restricted to a particular space.
This organization has many advantages over prokaryotic cells!
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13. Organelles
Organelles contribute to the specialization of eukaryotic cells.
Each organelle stands ready to perform a special task.
Specialized cells make eukaryotes capable of survival in complex environments.
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14. Cells Perform Basic Life Functions
Reproduction:
Certain organelles (i.e. nucleus) help the cells prepare to divide
Manufacture & Release of Energy:
2 types of organelles play an important role in food manufacturing and energy release; mitochondria and chloroplasts
Maintain Homeostasis:
Some organelles move supplies from one part of a eukaryotic cell to another; endoplasmic reticulum and golgi bodies.
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15. Prokaryotes vs. Eukaryotes
Prokaryotes Eukaryotes
No nucleus Nucleus
No membrane-bound Many membrane-
organelles bound organelles
Small in size Larger in size
Simple Complex
Evolved 3.5 billion Evolved 1.5 billion
years ago years ago
Only bacteria All other cells
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