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Friday Jan. 30th-Week 4 TOPIC: Mitosis and Cytokinesis DO NOW: Get out your objectives Science of Life OBJ : 5-6 -Discuss 9.1 Lab -Review 9.2 RDG Questions -Start 9.2 Picture Notes HANDOUTS to PICK-UP: -9.2 Picture Notes ABSENT AGENDA EXT: 9.2 Vocab DUE DATE: Monday DW: 9.2 Picture Notes ---------------------------------------------------------------------------------------------------------------SEMINAR 2: -NA BEFORE/AFTER SCHOOL: DW- 9.2 RDG Qs EXIT: Fill in your level of understanding AND compare the key activity of interphase and the key activity of mitosis. Friday Friday: ___1__/__30___ OBJECTIVE…#_5-6____ TOPIC: Mitosis and cytokinesis Daily Work Grade- 9.2 Reading Questions DW GRADE: 2 1 0 DO NOW •Q: •A: Today’s Objectives 5--- DESCRIBE / RECOGNIZE the events of each stage of mitosis LOTS OF DETAIL 6---EXPLAIN the process of cytokinesis Vocabulary -prophase -metaphase -anaphase -telophase -sister chromatid -centromere -spindle fibers (apparatus) -binary fission These should be done by test day! 9.2 VOCAB FOLD CUT ---------FRONT ---------INSIDE left -along dotted line -across solid line HALF way -VOCAB TERM -definition -own words / 10 or less words INSIDE right -ACRONYM (1-4) -a word formed from the initials or other parts of several words -PICTURE of STRUCTURE (5-8) 9.2 Reading Questions 1. What is one function of mitosis in a multicellular organism? 1. Repairing damaged cells 2. Creating new cells for growth 9.2 Reading Questions 2. List the phase that shows the sister chromatids being pulled to opposite ends of the cell. -Anaphase 9.2 Reading Questions 3. How are sister chromatids attached? -Centromeres 9.2 Reading Questions 4. What happens to the chromatids during metaphase. -pulled into alignment along the equator of the cell 9.2 Reading Questions 5. What does the cell still need to do at the end of telophase? -complete the division 9.2 Reading Questions 6-NAME the cell structure that pinches the cytoplasm in half. -microtubules 9.2 Reading Questions 7. What features in Figure 9.10 [plant cells] can you use to identify the cell is a plant cell? -Cell Wall -Cell dividing by forming a cell plate 8. Concepts in motion Video 9.2 MITOSIS and CYTOKINESIS WHAT YOU WILL LEARN -The events of each stage of mitosis -The process of cytokinesis MITOSIS: asexual reproduction The process of asexual reproduction begins after a sperm fertilizes an egg. -[BODY CELLS] -CELL DIVISION occurs in a series of STAGES / PHASES 3 reasons [FUNCTIONS] why cells reproduce by asexual reproduction: 1. Growth 2. Repair 3. Replacement 15 **Cells that reproduce by asexual reproduction reproduce constantly 15 CHROMOSOME APPEARANCE chromatin chromatid sister chromatids / chromosome 16 centromere 16 Animated Mitosis Cycle http://www.cellsalive.com/mitosis.htm BEFORE-Interphase 1st- Prophase 2nd- Metaphase 3rd- Anaphase 4th- Telophase AFTER-Cytokinesis REMEMBER I Pray More At The Church -Interphase -Prophase -Metaphase -Anaphase -Telophase -Cytokinesis MITOSIS INTERPHASE -Occurs BEFORE MITOSIS begins [G1 / S / G2] -FUNCTION -grow / metabolism -duplicate DNA -prep for division -CHROMOSOME APPEARANCE -start of phase: CHROMATIN -end of phase: SISTER CHROMATIDS chromatin Nucleus DNA is RREPLICATED Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm cell begins to divide -mitosis begins:_________________ CENTRIOLES -__________(or poles) appear and begin to move to opposite ends of the cell. SPINDLE FIBERS -_______________form between the poles. -CHROMOSOME APPEARANCE: sister chromatids CHROMOSOMES CONDENSE Centrioles Sister chromatids Spindle fibers Animal Cell Plant Cell Spindle fibers Centrioles Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm -CHROMOSOME APPEARANCE -sister chromatids / chromosomes CHROMOSOMES LINE UP [MIDDLE] Centrioles Spindle fibers Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm -CHROMOSOME APPEARANCE -sister chromatids / chromosomes -chromatid CHROMOSOMES MOVE [AWAY] TO OPPOSITE POLES Centrioles Spindle fibers Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm Cell is ready to divide -MITOSIS ENDS: ________________ NUCLEI -two new __________ form -CHROMOSOME APPEARANCE -chromatin CHROMOSOMES RELAX Nuclei Chromatin Nuclei Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm -CHROMOSOME APPEARANCE -chromatin microtubules -___________ pinch cytoplasm -cell membrane moves inward to create new two________ cells nucleus -each with its own___________ chromosomes -with identical __________ Animal Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Interphase Plant Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Interphase Cell Cycle 32 EXIT FILL-IN: level of understanding of today’s objective EXIT: Compare the key activity of interphase and the key activity of mitosis.
