1. The Cell Cycle
The Life Cycle of a cell : includes Growth, Development, and Reproduction

2. Importance of Cell Division
Growth of Organism
Repair
Reproduction for some organisms

3. Phases of the Cell Cycle
1. Interphase
Growth and normal functions (G1)
DNA replicates – makes a copy of
itself (S)
Sister chromatids are held together by the centromere
Organelle replication

4. Interphase

5. 2. Mitosis Prophase DNA condenses forming chromosomes
Nuclear membrane breaks down
Spindle fibers form between centrioles

6. Prophase

7. Mitosis continued Metaphase
Replicated chromosomes line up across the middle of the cell
Chromosomes attach to the spindle fibers at the centromere, which is still holding the chromatids together

8. Metaphase

9. Anaphase Mitosis continued
Spindle fibers pull the two chromatids in opposite directions causing the centromere to split
Chromatids move to opposite sides
Cell becomes stretched

10. Annaphase

11. Telophase Chromatid unwind forming chromatin
Mitosis continued
Telophase
Chromatid unwind forming chromatin
New nuclear membrane forms around each set of chromatin

12. Telophase

13. 3. Cytokinesis Cell cycle
Cell membrane pinches together forming two cells
Cell plate form in plant cells , eventually forms cell membrane and wall

14. Cytokinesis

15. Results of Cell Division
Parent cell no longer exists
Two daughter cells with identical DNA to the parent cell form

16. The cell cycle INTERPHASE S (DNA synthesis) G1 G2 Cytokinesis Mitosis
MITOTIC (M) PHASE

17. Animal Mitosis -- Review
Interphase                                                             
Prophase                                                             
Metaphase                                                             
Anaphase                                                             
Telophase                                                             
Cytokinesis                                                             

18. Plant Mitosis -- Review
Interphase                                                             
Prophase                                                             
Metaphase                                                             
Anaphase                                                             
Telophase                                                             
Cytokinesis                                                             

19. The Cell Cycle