1. https://www.youtube.com/watch?v=Q6ucKWIIFmg stop at 4:26 https://www.youtube.com/watch?v=f-ldPgEfAHI

2. How does the cell know how to divide?
Cell Division
Reproduction
Growth
Repair
Why do cells divide?
How does the cell know how to divide?
The DNA has the instructions for all of the cell’s activities.

3. Cell Cycle 3 Parts The sequence of development and division of a cell
Interphase - Preparation
Mitosis – Division of Nucleus
Cytokinesis – Splitting
Adult human cell: ~24 hrs
18-20 hours in interphase
2 hours in mitosis
Embryonic cells: 30 min.
How long does it take?

4. What is a chromosome?
thread-like structures inside the nucleus of cells
contains the specific instructions that make that organism
Humans have 46 chromosomes

5. Interphase What happens Cell doubles in size DNA replicates
Organelles double in number

6. Interphase Plant Cell Animal Cell
Photographs from:

7. Mitosis: PROPHASE What happens DNA forms chromosomes Spindle forms
Centrioles move toward opposite poles
Nuclear membrane begins to disappear

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

9. Mitosis: METAPHASE What happens Nucleus has disappeared completely
Chromosomes line up in the middle of the cell “equator”

10. Metaphase Plant Cell Animal Cell
Photographs from:

11. Mitosis: ANAPHASE What happens Centromeres divide
Chromatids separate and move to opposite poles

12. Anaphase Plant Cell Animal Cell
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13. Mitosis: TELOPHASE What happens
Nuclear membrane forms around each group of chromosomes
Chromosomes unwind
Cytokinesis begins

14. Telophase Plant Cell Animal Cell
Photographs from:

15. Cytokinesis
Cytoplasm divides
One cell becomes 2 cells
What happens

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

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

18. Cell Cycle

19. 1. http://www. youtube. com/watch
1. stages of mitosis mitosis in real time  2.  
3.  Hand jive video