1. HOW DO CELLS PRODUCE NEW CELLS?
Chapter 2-9

2. CELL DIVISION
When you were small, you did not have a lot of cells.
While you were growing up, your cells produced more cells.
Most cells are able to produce and make new cells. This process is called
CELL DIVISION = MITOSIS.

3. The nucleus controls cell division.
CHROMOSOMES
The nucleus controls cell division.
Inside the nucleus are chromosomes.
Chromosomes are made of chromatin. Chromosomes will decide the characteristics of future organism.
Chromatin

4. MITOSIS
Mitosis has 4 phases (steps): 1. PROPHASE 2. METAPHASE 3. ANAPHASE 4. TELOPHASE

5. PROPHASE
The chromosomes become thick and shortened.

6. METAPHASE
Chromosomes line up across the center of the cell.

7. ANAPHASE
Chromosomes copy, split and separate.

8. TELOPHASE
The cell membrane pinches together in between the two nuclei.

9. DAUGHTER CELLS
After mitosis is finished, the old cell makes two identical daughter cells.

10. Mitosis in animal and plant cells
Animal cells
Plant cells
In animal cells, the cell membrane pinches to make two cells.
In plant cells, a new cell wall and new cell membrane form down the middle of the cell. They form a wall between the two new nuclei.

11. MITOSIS CYCLE

12. MITOSIS CYCLE

13. MITOSIS ANIMATIONS
hill.com/sites/ /student_view0/chapter2/animat ion__mitosis_and_cytokinesis.html

14. Checking concepts: What is mitosis?
Mitosis- is a division of a nucleus (a cell)

15. What controls cell division?
The nucleus controls the cell division.

16. What is metaphase? What is happening during metaphase?
Chromosomes line up across the center of the cell.

17. Where are chromosomes located?
Chromosomes are located in the nucleus of a cell.

18. What is anaphase? What is happening there?
Chromosomes copy, split and separate

19. What are daughter cells?
Daughter cells are two identical cells formed as a result of cell division.

20. How is cell division in plants different form cell division in animals?
In plant cells, the cell membrane does not pinch together to form two daughter cells. A new cell wall and cell membrane form down the middle of the cell.

21. Fill in blanks.
In the___________, chromosomes line up across the center of the cell.
The chromosomes become thick and shortened in the ______________.
Chromosomes are inside the ___________.
In plant cells, after telophase, a new _______________ and a new ___________ is formed.
______________ controls a cell division.