Cell Division

• cell cycle

  The continuous series of events in the life of a cell is called cell cycle
• Mitosis


  A process in which one cell produces two new cells that are exact copies of the original
• Prophase


  When the nucleus and the nuclear membrane disappear and chromosomes form
• Metaphase


  The phase of mitosis when the chromosomes line up in the centre of the cell
• Anaphase


  The phase in mitosis when the chromosomes separate and move to opposite ends of the cell
• Telophase


  The phase in mitosis when the membrane surrounding the nucleus re-forms, creating two new nuclei
• Interphase


  The stage in the cell cycle in which the cell spends most of its life, carrying out its normal functions as well as making a copy of its DNA and organelles in order to prepare for cell division
• Cytokinesis


  The stage in the cell cycle when the cytoplasm and organelles divide into two separate cells
• Why do cells need to reproduce

  cells divide where the body needs to:

  • Grow
  • Replace worn out cells
  • Repair damaged tissue
  • Reproduction

  Achieved by Mitosis
• Asexual Reproduction

  involves only one parent. The offspring are exact genetic copies of the parent. This is how single-celled organisms reproduce.
• Sexual reproduction 


  involves two parents. Offspring inherits characteristics from both parents.