1. Do Now- Wednesday Please place your Tuesday HW on your desk 
What are the 4 characteristics of living things?
What is a cell?

2. Yellow Cards Yellow Card = warning Red Card = you are out of the game
If you get a yellow card, you must quietly step outside and fill out this form.
Come back in when Ms. Handa allows.
We will discuss this form after class.

3. Characteristics of Living Things
All living things grow and reproduce…
All living things have cells…
All living things respond to their environment…
All living things receive energy…

4. Cell Types and Viruses

5. Today’s Objective
Students will be able to describe the differences between prokaryotic cells, eukaryotic cells and viruses

6. Cell Theory 1. All organisms are made of cells.
2. All existing cells are produced from other living cells.
3. The cell is the most basic unit of life.

7. What are Cells?

8. Types of Cells All cells can be categorized as: a) Prokaryotic
b) Eukaryotic
These differ in their size, shape, and their complexity

9. Prokaryotic Cells Small and simple
A cell that does NOT have a nucleus and no membrane-bound organelles
Small and simple
EXAMPLE: Bacteria

10. Example of prokaryote: bacteria

11. Prokaryotic Cell Structure Label!
DNA
Ribosomes
Cytoplasm
Cell membrane

12. Eukaryotic Cells
A cell that does have a nucleus and membrane-bound organelles
Larger than a prokaryotic cell
Examples: animals, plants, fungi, protists

13. Examples of Eukaryotes:
plants
animals
fungi

14. Eukaryotic Cell Structure Large!
Lots of organelles!

15. How are they similar? Both prokaryotic and eukaryotic cells have:
A cell membrane
Cytoplasm
Genetic Information

16. Check for Understanding #1
A scientist looks in his microscope and sees a cell with a nucleus. He can’t remember what he learned in his Biology class. Help him out- What kind of cell is he looking at?
A eukaryotic cell

17. CFU #2 Which of the following is a prokaryote? A bacteria
B animal cell
C fungi
D human cell

18. Viruses Where do viruses fit in? …they DON’T! Viruses are not cells!
Viruses are smaller and simpler than prokaryotic and eukaryotic cells
They can NOT reproduce on their own, they require a host cell

19. Virus Structure
Viruses basic structure is a nucleic acid (DNA or RNA) inside a protein coat

20. Virus Video

21. Example of Viruses
HIV - leads to AIDS
H1N1 (swine flu)

22. Most Complex  Most Simple
Eukaryotic cell  prokaryotic cell  virus

23. The Big Difference
Prokaryotes = NO NUCLEUS, NO MEMBRANE-BOUND ORGANELLES
Eukaryotes = NUCLEUS, MANY MEMBRANE-BOUND ORGANELLES
Virus = SMALL, NOT ALIVE, CANT REPRODUCE, NO ORGANELLES

24. Fill out the following table in your notes. .
Size
Complexity
Cell Membrane (Y/N)
Genetic Material (Y/N)
Prokaryotic Cells
Eukaryotic Cells
Viruses

26. Exit Slip
Eukaryotic cells are differentiated from prokaryotic cells because eukaryotic cells:
A are much smaller
B have permeable membranes
C have a higher rate or reproduction
D have nuclei

27. Exit Slip
Eukaryotes, prokaryotes, and viruses are similar in that they all have:
A mitochondria
B cytoplasm
C DNA
D cell membranes