Grade 10 Biology- Cell Division & Cell Cycle

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9 Terms

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Reasons for Cell Divison

  1. repair damaged tissues

  2. grow

  3. reproduce

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Interphase

  • first stage of cell division

  • the longest stage

  • the cells carries out all life activities except for cell division

  • DNA is a long, thin invisible strand called CHROMATIN

  • DNA duplicates in this stage

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Mitosis

Division of the nucleus

split into 4 phases (PMAT)

  1. Prophase

  2. Metaphase

  3. Anaphase

  4. Telophase

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Prophase

  • DNA condenses into a compact form

  • nuclear membrane dissolves

  • CENTRIOLES move to opposite poles and spindle fibres form

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Metaphase

Chromosome ( chromatids ) line up in the middle of the cell

spindle fibres attach to

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