1. Mitosis
How Cells Divide

2. Have you ever wondered…
How do little elephants grow up to be BIG elephants?

3. Or….. Why do animals shed their skin?

4. The process of asexual reproduction begins after a sperm fertilizes an egg.

5. Three reasons why cells reproduce by asexual reproduction: 1. Growth 2
Three reasons why cells reproduce by asexual reproduction: Growth Repair Replacement

6. Give an example of a time your cells would need to reproduce!

7. Cancer
CANCER is when cells multiple rapidly, basically UNCONTROLLED mitosis
Skin cancer - the abnormal growth of skin cells - most often develops on skin exposed to the sun

8. What is the Cell Cycle? What is MITOSIS?
The series of events in which a cell grows, prepares to divide, and divides to form two new identical cells.
What is MITOSIS?
The second stage of the cell cycle when the cell divides into two new identical cells.

9. Animated Mitosis Cycle
Interphase
Prophase
Metaphase
Anaphase
Telophase & Cytokinesis

10. Interphase occurs before mitosis begins
Chromosomes are copied.
Chromosomes are made of DNA.
Pieces of DNA in specific patterns are called genes. Your genes make you who you are.
You will find the chromosomes  in the nucleus.
CELL MEMBRANE
Nucleus
Cytoplasm
Chromosomes

11. Interphase Plant Cell Animal Cell
Photographs from:

12. Prophase 1st step in Mitosis
Mitosis begins. Cell begins to divide.
Centrioles (or poles) appear and begin to move to opposite end of the cell.
Spindle fibers form between the poles.
Centrioles
chromosomes
Spindle fibers

13. Prophase Plant Cell Animal Cell Spindle fibers Centrioles
Photographs from:

14. Metaphase 2nd step in Mitosis
Chromosomes line up along the middle of the cell.
They attach to the spindle fibers.
Chromosomes
Centrioles
Spindle fibers

15. Metaphase Plant Cell Animal Cell
Photographs from:

16. Anaphase 3rd step in Mitosis
Chromosomes separate and begin to move to opposite ends of the cell.
Chromosomes
Centrioles
Spindle fibers

17. Anaphase Plant Cell Animal Cell
Photographs from:

18. Telophase 4th step in Mitosis
The cell forms nuclear membranes around each set of chromosomes.
There are two new nuclei.
The chromosomes uncoil.
Mitosis ends.
Nucleus
Nucleus

19. Telophase Plant Cell Animal Cell
Photographs from:

20. Cytokinesis occurs after mitosis
Cell membrane moves inward to create two new cells – each with its own complete set of DNA with identical chromosomes.

21. PMAT REMEMBER! Prophase Metaphase Anaphase Telophase
A mnemonic to help remember the stages of mitosis.
Pro Middle Away Two

22. Animal Mitosis -- Review
Interphase                                                             
Prophase                                                             
Metaphase                                                             
Anaphase                                                             
Telophase                                                             

23. Plant Mitosis -- Review
Interphase                                                             
Prophase                                                             
Metaphase                                                             
Anaphase                                                             
Telophase                                                             

24. Cell Cycle

25. 4. Anaphase The Cell Cycle 2. Prophase 6. Cytokinesis 5.Telophase
- Cell Division
The Cell Cycle
2. Prophase
3. Metaphase
4. Anaphase
5.Telophase
1. Interphase
6. Cytokinesis 25

26. Mitosis Animation