1. Chapter 6, Sections 2 and 3

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

3. WHY DO ANIMALS SHED THEIR SKIN?

4. The process of asexual reproduction begins after a sperm fertilizes an egg.

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

6.  Process where nucleus of Cell Divides in two  Will have the same number and kinds of chromosomes as parent cell  Occurs in somatic cells=BODY cells (helps you grow and heal)  Every second in your body – 2 million RBC’s are made through mitosis!

7.  Process by which the nucleus divides forming 2 distinct cells=DAUGHTER CELLS

8.  Contains DNA  Different organisms contain different numbers of chromosomes called the DIPLOID NUMBER (2N)  Humans=46  Dog=78  Lettuce=18  Goldfish=94

9.  Made of chromatin  Composed of DNA and Protein  2 chromatids (pair) attached by centromere=SISTER CHROMATIDS

10.  DNA is copied in DNA Replication

11. INTERPHASE OCCURS BEFORE MITOSIS BEGINS “INTERMISSION” CELL MEMBRANE Nucleus Cytoplasm

12. INTERPHASE Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

13.  Prophase (Prepare): Chromosomes coil up and become visible in the nucleus. Nuclear membrane dissolves.

14. PROPHASE 1 ST STEP IN MITOSIS “PREPARE” Centrioles Sister chromatids Spindle fibers

15. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm Spindle fibers Centrioles

16.  Metaphase (middle): Chromosomes line up on equator, spindle fibers attach.

17. METAPHASE 2 ND STEP IN MITOSIS “MIDDLE” Centrioles Spindle fibers

18. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

19.  Anaphase (away): Centromeres divide, chromosomes separate and move toward poles.

20. ANAPHASE 3 RD STEP IN MITOSIS “AWAY” Centrioles Spindle fibers

21. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

22.  Telophase (tell me when it’s over): New nuclear membrane grows around each bundle of Chromosomes

23. TELOPHASE 4TH S TEP IN MITOSIS “TELL ME WHEN IT’S OVER” Nuclei Chromatin

24. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

25.  Cytoplasm is divided in ½, taking organelles with it.  Cell Membrane encloses all.  Animal cell: pinched in ½, called “cleavage furrow.”  Plant cell: Cell plate grows between the two new cells.  Mitosis video Mitosis video  Thread of Life Thread of Life

26. CYTOKINESIS OCCURS AFTER MITOSIS 2 DAUGHTER CELLS ARE FORMED. with the exact same genetic info as the parent cell

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

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

29. REMEMBER! I Interphase P Prophase M Metaphase A Anaphase T Telophase C Cytokinesis IPMATC I Pray M ore At T he Church

30. 30

31. http://www.cellsalive.com/mitosis.htm