Cell Division (Edexcel GCSE Biology)

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  • Define the term mitosis.

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  • Define the term mitosis.

    Mitosis is a form of nuclear division that results in the production of genetically identical cells. It is part of the cell cycle.

  • True or False?

    Mitosis is another name for the cell cycle.

    False.

    Mitosis is a part of the cell cycle. The majority of the cell cycle is spent in interphase.

  • What are the main stages of the cell cycle?

    The stages of the cell cycle are:

    • interphase

    • mitosis

    • cytokinesis

  • What are the stages of mitosis?

    The stages of mitosis are:

    • prophase

    • metaphase

    • anaphase

    • telophase

  • During prophase of mitosis the                                                condense and become visible and the                                                                        breaks down.

    During prophase of mitosis the chromosomes condense and become visible and the nuclear membrane breaks down.

  • Which stages of the cell cycle or mitosis are taking place in cells A-C?

    Grid of cells with various stages of cell division indicated by the phases A, B, and C. 'A' points to a cell with chromosomes lined up along the cell equator, 'B' to a cell with chromosomes being pulled apart, and 'C' to a cell with no clearly distinguishable chromosomes.

    The stages shown in cells A-C are:

    • A = metaphase: the chromosomes are lined up down the cell equator

    • B = anaphase: spindle fibres are pulling chromatids apart

    • C = interphase: the chromosomes have not condensed and nuclear membrane is present

    Grid of cells with various stages of cell division indicated by the phases A, B, and C. 'A' points to a cell with chromosomes lined up along the cell equator, 'B' to a cell with chromosomes being pulled apart, and 'C' to a cell with no clearly distinguishable chromosomes.
  • During which stage of mitosis do new nuclear membranes form around the chromosomes?

    New nuclear membranes form around the chromosomes during telophase.

  • Why is mitosis important in the body?

    Mitosis is important in the body to produce new cells for:

    • growth

    • repair of damaged tissues and the replacement of cells

    • asexual reproduction

  • True or False?

    Mitosis results in genetically diverse cells.

    False.

    Mitosis results in genetically identical cells.

  • Describe the outcome of a mitotic division.

    A mitotic division produces:

    • two daughter cells

    • genetically identical cells

    • diploid cells

  • What is cancer?

    Cancer is a disease that results from uncontrolled cell division.

  • True or False?

    Cancer occurs due to changes in cells.

    True.

    Changes inside cells can lead to uncontrolled cell division, causing cancer to develop.