1. The Cell Cycle
Cell Division

2. Onion Cells

3. Cell Division A cell must divide to: Grow Reproduce
Repair damaged tissues

4. The cell cycle is how cells grow and divide.
3 parts
Interphase
(Growth)
Mitosis
(Division)
Cytokinesis
(Cell Splits)

5. Stage 1: Interphase Interphase is the growth stage Cell Grows
Genetic material is copied
Prepares for division

6. Interphase
makes up most of the cell cycle & takes the longest!

7. Review What is the longest stage of the cell cycle? Metaphase
Interphase
Chromophase
Mitosis

8. The Genetic Material All genetic material is found in the nucleus
The genetic material is called DNA
DNA is contained in thread-like structures called Chromosomes

9. Stage 2: Mitosis
Mitosis is when the cell nucleus divides into two identical nuclei.
New cells are produced for growth & repair
New cells are identical to the parent cells

10. Stages of Mitosis
Prophase
Metaphase
Anaphase
Telophase
PMAT

11. Review
The stage of the cell cycle in which the nucleus divides is known as:
Interphase
Mitosis
Cytokinesis
Prophase

12. Stage 1: Prophase Chromosomes form pairs
The centrioles are moving to the poles (ends)
Spindle fibers develop
The nuclear membrane is breaking down.

13. Stage 2: Metaphase. The chromatids line up in the middle of the cell
They attach to the spindle fibers

14. Stage 3: Anaphase The chromosomes are pulled apart
They move to the opposite side of the cell.

15. Stage 4: Telophase The Spindle fibers break apart
A new nuclear membrane forms
Two identical nuclei exist.

16. Review Which lists the phases of mitosis in order?
prophase, metaphase, anaphase, telophase
telophase, anaphase, metaphase, prophase
metaphase, anaphase, prophase, telophase
anaphase, prophase, metaphase, telophase

17. Stage 3:Cytokinesis The cytoplasm separates
Left with two identical cells

18. Cytokinesis This is the end of the cell cycle
Each new daughter cell has the same number of chromosomes as the parent cell!

19. Summary Mitosis starts with one cell It ends with two identical cells
Cells have the same number of chromosomes
3 Stages of Cell Cycle:
1. Interphase
2. Mitosis (Prophase, Metaphase, Anaphase, Telophase)
3. Cytokinesis

20. Mitosis Video

21. Make a Cell Cycle Flipbook
Stage
What happens to chromosomes?
What happens in cell?
Picture
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis