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9-2 Mitosis and cytokinesis

9-2 Mitosis and cytokinesis. What key events happen in the cell during mitosis and cytokinesis?. journal. Come up with as many synonyms for the word “copy” as you can. journal. COPY. Eukaryotic Cell Cycle. What do you already know?. MITOSIS cHALLENGE.

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9-2 Mitosis and cytokinesis

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  1. 9-2 Mitosis and cytokinesis What key events happen in the cell during mitosis and cytokinesis?

  2. journal • Come up with as many synonyms for the word “copy” as you can.

  3. journal COPY

  4. Eukaryotic Cell Cycle • What do you already know?

  5. MITOSIS cHALLENGE What key events happen during each stage of mitosis? • Obtain a note sheet, mitosis flashcards, microscope and onion root tip slides • Use the flashcards to complete your note sheet for the FIRST stage of the cell cycle (Interphase). • Using your microscope, identify a cell that is undergoing this stage. Verify with Mrs. Miller • Move onto the next stage and repeat.

  6. Interphase Cell grows and carries out cellular functions DNA and centrioles replicate Preparation for division

  7. Mitosis A. Prophase • Chromatin condenses into chromosomes; sister chromatids attached at the centromere • Nuclear membrane disintegrates • Nucleolus disappears • Centrioles move to poles of cell and spindle begins to form

  8. Mitosis B. Metaphase: • Chromosomes attach to spindle apparatus and line up at equator of cell

  9. Mitosis C. Anaphase: • Microtubules shorten, pulling sister chromatids apart. • Individual chromosomes move to poles of the cell

  10. Mitosis D. Telophase: • Chromosomes reach poles of cell and “relaxes” into chromatin • Nuclear envelop reforms, nucleolus becomes visible • Cell membrane begins to pinch

  11. Cytokinesis Splits one cell into two Animal Cell – membrane pinches inward Plant Cell – Cell plate forms

  12. Result Each daughter cell has identical set of chromosomes  View it in action

  13. Label each phase of mitosis and place the stages in the correct order.

  14. Cellular Reproduction Chapter Chapter Diagnostic Questions CDQ 1 Which is the first phase of mitosis? • A • B • C • D interphase prophase metaphase telophase

  15. Cellular Reproduction Chapter Chapter Diagnostic Questions CDQ 2 During what phase do the sister chromatids line up in the middle of the cell? • A • B • C • D interphase metaphase anaphase telophase

  16. Cellular Reproduction Chapter Chapter Diagnostic Questions CDQ 3 Which is not a phase of the cell cycle? • A • B • C • D cytokinesis interphase apoptosis mitosis

  17. Cellular Reproduction Chapter Section 1Formative Questions FQ 1 Which can more efficiently supply nutrients and expel waste products? • A • B • C • D larger cells smaller cells cells with lower surface area to volume ratio cells shaped like a cube

  18. Cellular Reproduction Chapter Section 1 Formative Questions FQ 2 At what stage does a cell spend most of its life? • A • B • C • D cytokinesis interphase mitosis synthesis

  19. Cellular Reproduction Chapter Section 1Formative Questions FQ 3 What happens in the cell during cytokinesis? The cell grows and carries out normal functions. The cell copies its DNA and forms chromosomes. The cell’s nucleus and nuclear material divide. The cell’s cytoplasm divides. • A • B • C • D

  20. Cellular Reproduction Chapter Section 2 Formative Questions FQ 4 In what stage of the cell cycle does the cell’s replicated genetic material separate? • A • B • C • D cytokinesis interphase mitosis prophase

  21. Cellular Reproduction Chapter Section 2Formative Questions FQ 5 Which diagram shows anaphase? • A • B • C • D

  22. Cellular Reproduction Chapter Section 2Formative Questions FQ 6 At the end of mitosis the nuclear material is divided and two new cells have formed. • A • B true false

  23. Cellular Reproduction Chapter Chapter Assessment Questions CAQ 1 This cell has completed what stage of mitosis? • A • B • C • D anaphase interphase metaphase telophase

  24. Cellular Reproduction Chapter Standardized Test Practice STP 3 Which occurs in plant cells but not animal cells during the cell cycle? • A • B • C • D formation of a cell plate formation of microtubules formation of a cleavage furrow at the equator of the cell movement of chromosomes to the poles of the cell

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