Bellwork 1-27-16 Check Extra Credit of the Week due Friday!! Take Out: Agendas for Grade Reports!!! Reproduction Review Write Down HW: Mitosis Acronym due Friday Get Grade Report Signed Test Corrections due Friday Use Quizlet!!! Check Extra Credit of the Week due Friday!! Label pg.137 “Mitosis” Glue in pg.138 “Mitosis Notes”. Label pg.139 “Mitosis Acronym”. Get the Mitosis Notes off table 8 and the half sheet off table 4. Make sure you have 2 colored pencils. Only use sharpener on table 2. Read pgs.86-87 in text. Answer the following questions on pg.137 in notebook. Eukaryotic cells reproduce in what process? Explain the relationship between mitosis and reproduction? Explain the relationship between mitosis and heredity? Open to pg.88 in textbook when done!
Mitosis and the Cell Cycle Big Idea: Mitosis is the process in which the nucleus divides to form two new nuclei and two cells with identical DNA. Mrs. Camp 7th Grade Life Science 2
How do little elephants grow up to be BIG elephants?
Why do animals shed their skin?
Mitosis begins after fertilization 1 cell becomes 2 cells, becomes 4 cells…becomes TRILLIONS
Why do cells make more cells? Three reasons why cells reproduce by asexual reproduction: 1. Growth 2. Repair 3. Replacement
Animated Mitosis Cycle http://www.cellsalive.com/mitosis.htm Interphase Prophase Metaphase Anaphase Telophase & Cytokinesis
Interphase occurs before mitosis begins 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
Interphase Plant Cell Animal Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Prophase 1st step in Mitosis Mitosis begins (cell begins to divide) Centrioles appear and begin to move to opposite end of the cell. Spindle fibers form between the centrioles. Centrioles Sister chromatids Spindle fibers
Prophase Plant Cell Animal Cell Spindle fibers Centrioles Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Metaphase 2nd step in Mitosis Chromatids (or pairs of chromosomes) attach to the spindle fibers. Centrioles Spindle fibers
Metaphase Plant Cell Animal Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Anaphase 3rd step in Mitosis Chromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell. The separated chromatids are now called chromosomes. Centrioles Spindle fibers
Anaphase Plant Cell Animal Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Telophase 4th step in Mitosis A new nucleus forms around each identical groups of chromosomes at opposite sides of the cell and two new nuclei form. Chromosomes appear as chromatin (threads rather than rods). Mitosis ends. Nuclei Nuclei Chromatin
Telophase Plant Cell Animal Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Cytokinesis occurs after Mitosis Cell membrane moves inward to create two daughter cells – each with its own nucleus with identical chromosomes.
Animal Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase
Plant Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase
IPMATC REMEMBER! Interphase Prophase Metaphase Anaphase Telophase Cytokinesis IPMATC A mnemonic to help remember the stages of mitosis. I Prefer Meatloaf At Tennis Camp
Cell Cycle
- Cell Division The Cell Cycle 23
Mitosis Animation http://www.cellsalive.com/mitosis.htm
Name that phase: A C B D E F
Place these phases in order: B A D F E
Name stage of mitosis
Name stage of mitosis
Name stage of mitosis
Name stage of mitosis
Name stage of mitosis
Name stage of mitosis