Cell Cycle and Mitosis Overview
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Questions and Answers

What is the primary purpose of the cell cycle?

  • To initiate the apoptosis process
  • To facilitate growth and replacement of damaged cells (correct)
  • To enhance nutrient absorption in cells
  • To ensure the cell remains dormant
  • During which phase of mitosis do chromosomes align along the center of the cell?

  • Metaphase (correct)
  • Anaphase
  • Telophase
  • Prophase
  • What occurs during the anaphase of mitosis?

  • Chromosomes begin to uncoil
  • Chromosomes separate and are pulled to opposite sides (correct)
  • Chromosomes condense and become visible
  • Two nuclei are formed in the cell
  • What is the final result of mitosis?

    <p>An exact copy of the original cell with the same number of chromosomes (D)</p> Signup and view all the answers

    What is the process called that occurs after mitosis to divide the cell physically?

    <p>Cytokinesis (C)</p> Signup and view all the answers

    What structures do spindle fibers attach to during cell division?

    <p>Chromosomes (C)</p> Signup and view all the answers

    What is the primary outcome of the process of meiosis?

    <p>Four sex cells with genetic diversity (B)</p> Signup and view all the answers

    Which type of tumor remains in its original location and typically does not affect surrounding organs?

    <p>Benign tumor (A)</p> Signup and view all the answers

    What is the function of centrosomes during prophase?

    <p>To release spindle fibers (C)</p> Signup and view all the answers

    What is 'crossing over' during meiosis?

    <p>The exchange of genetic material between homologous chromosomes (D)</p> Signup and view all the answers

    What characterizes a malignant tumor?

    <p>Movable and invasive nature (C)</p> Signup and view all the answers

    Which phase of the cell cycle involves the cell preparing for division?

    <p>Interphase (D)</p> Signup and view all the answers

    How does cancer fundamentally differ from normal cell behavior?

    <p>Continuous uncontrolled growth of cells (B)</p> Signup and view all the answers

    Flashcards

    Cell Cycle

    The life cycle of a cell, from one division to the next, including interphase and mitotic phase.

    Mitosis Phases

    Prophase, Metaphase, Anaphase, and Telophase are the four steps of nuclear division in the cell cycle.

    Mitosis

    Division of DNA into two identical nuclei in a cell.

    Prophase

    First phase of mitosis, chromosomes condense into X shapes and spindle fibres appear.

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    Cytokinesis

    Division of the cytoplasm to form two separate daughter cells after mitosis is complete.

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    Chromatin

    Long, threadlike DNA present during interphase.

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    Chromosomes

    DNA condensed into X-shaped structures during prophase.

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    Centrosomes

    T-shaped structures that release spindle fibers during prophase.

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    Spindle Fibers

    Tiny strings that attach to chromosomes and pull them apart.

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    Cancer

    Uncontrolled cell growth.

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    Malignant Tumor

    Tumor that invades surrounding tissue, interferes with function, and can spread (metastasize).

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    Crossing Over

    Exchange of genetic material between homologous chromosomes during meiosis.

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    Study Notes

    Cell Cycle

    • Cell cycle = the life cycle of a cell; from cell division until the next cell division
    • Consists of 2 phases: interphase and mitotic phase

    Cell Division

    • Cell division = happens when an organism needs to: grow larger or replace dead or damaged cells
    • Mitosis = When the (DNA) or chromosomes divide and separate into 2 identical nuclei
      • 4 phases of mitosis
        • Prophase = the chromatin condenses into X-shaped structures. Spindle fibers begin to be seen from the centrioles. Nucleus disappears.
        • Metaphase = chromosomes align along the center of the cell.
        • Anaphase = the chromosomes separate. Get pulled apart to opposite sides of the cell.
        • Telophase = chromosomes unite on each side of cell. 2 nuclei.

    Results of Mitosis

    • Result of mitosis = exact copy of the original cell (same number of chromosomes).

    Cytokinesis

    • Cytokinesis = after mitosis is finished, the cell physically divides into 2 cells.

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    Description

    Explore the vital processes of the cell cycle and mitosis in this quiz. Understand the phases involved, including interphase and cytokinesis, as well as the stages of mitosis. Test your knowledge on how cells grow, divide, and replicate their genetic material.

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