1. Cell Theory & Cell Division Ms. Zulick Feb. 10, 2015

2. Cell Theory 1. All living things are made of cells

3. Which of the following is made of cells? a)Rock b)Bacteria c)Fish d)Skin e)Glass f)Eyelashes Question 2: Which of these are made of atoms?

4. Cell Theory 2. Cells have structure (they contain different parts with their own jobs)

5. Cell Theory 3. All cells come from other cells

6. Cell Theory 4. Cells contain DNA or genetic information

7. 2 Types of Cells 1. Eukaryotic = Has a Nucleus 2. Prokaryotic = Has NO Nucleus

8. To help you remember… Pro = NO! Eu = YES!

9. How do Cells Divide?

10. Mitosis Videos Cell Cycle & Cancer : http://youtu.be/lpAa4TWjHQ4 http://youtu.be/lpAa4TWjHQ4 Mitosis : http://youtu.be/gwcwSZIfKlM http://youtu.be/gwcwSZIfKlM As you watch: Why is it important for your cells to divide? What are the 4 main parts of Mitosis?

11. Why is it important for cells to divide? Helps you grow Helps heal wounds Replaces old, worn out cells

14. Before a cell divides… Interphase 90% of cell life Cell is working, doing its job Towards the end, begins to make a copy of its DNA

16. Steps of Mitosis: PMAT 1. Prophase P = Prepare Cell makes a copy of DNA DNA condenses into chromosomes

17. Steps of Mitosis: PMAT 2. Metaphase M = Middle Nucleus “dissolves” Chromosomes line up in the middle of the cell middle of the cell

18. Steps of Mitosis: PMAT 3. Anaphase A = Away Chromosomes are pulled apart pulled apart

19. Steps of Mitosis: PMAT 4. Telophase T = Two Twins Splits into two identical nuclei and cells nuclei and cells

20. Identify the Steps of Mitosis A)B) C)D)

21. A B C D

22. Meiosis- division of sex cells It is what makes you male or female PMAT x 2 then cytokenesis

23. Steps of Meiosis