1. MITOSIS and the CELL CYCLE
CELL DIVISION AND REPRODUCTION
NOTEBOOK PAGES 54/55

2. How do little elephants grow up to be BIG elephants?

3. Why and how do animals shed their skin?

4. Cell Division is the answer!
MITOSIS
Asexual cell division that duplicates a cell exactly with ALL the genetic material in the new cell
DIPLOID CELLS ARE CREATED
MEIOSIS
Cell division of sex cells that have only HALF the regular amount of genetic information in the new cell.
HAPLOID CELLS!

5. The process of cell division (MITOSIS) begins after a sperm fertilizes an egg.

6. GENETIC INFORMATION LOCATED IN THE NUCLEUS
CHROMOSOMES- 46 in every normal human cell, DNA- carries info about all cells and the organism
CENTROMERE- center where the nucleus and genetic material start to divide
CENTRIOLES- poles that appear at the sides or edges of the cell during mitosis

7. Three reasons why cells reproduce by asexual reproduction: 1. Growth 2
Three reasons why cells reproduce by asexual reproduction: Growth Repair Replacement
Skin cancer - the abnormal growth of skin cells - most often develops on skin exposed to the sun.
Cell that reproduce by asexual reproduction reproduce constantly.

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

9. I PAID MY ATTORNEY THOUSANDS (CONSTANTLY)

10. I- Interphase PAID- Prophase MY- Metaphase ATTORNEY- Anaphase THOUSANDS- Telophase (CONSTANTLY)- Cytokinesis

11. Interphase occurs before mitosis begins resting period CELLS ARE DIPLOID- FULL NUMBER OF CHROMOSOMES (46)
Chromosomes are copied (# doubles)
Chromosomes appear as threadlike coils (chromatin) at the start, but each chromosome and its copy(sister chromosome) change to sister chromatids at end of this phase
CELL MEMBRANE
Nucleus
Cytoplasm

12. Interphase Plant Cell Animal Cell
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13. 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
Sister chromatids
Spindle fibers

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

15. Metaphase 2nd step in Mitosis
Chromatids (or pairs of chromosomes) attach to the spindle fibers.
Centrioles
Spindle fibers

16. Metaphase Plant Cell Animal Cell
Photographs from:

17. Anaphase 3rd step in Mitosis
Chromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell.
Centrioles
Spindle fibers

18. Anaphase Plant Cell Animal Cell
Photographs from:

19. Telophase 4th step in Mitosis
Two new nuclei form.
Chromosomes appear as chromatin (threads rather than rods).
Mitosis ends.
Nuclei
Nuclei
Chromatin

20. Telophase Plant Cell Animal Cell
Photographs from:

21. Cytokinesis occurs after mitosis 2 new cells have successfully formed
Cell membrane moves inward to create two daughter cells – each with its own nucleus with identical chromosomes.

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

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

24. IPMATC REMEMBER! Interphase Prophase Metaphase Anaphase Telophase
Cytokinesis
IPMATC
A mnemonic to help remember the stages of mitosis.
I Pay My Attorney Thousands (Constantly)

25. Cell Cycle

26. - A review of the steps of Mitosis:
The Cell Cycle 26