cell division

• what is a prokaryotic cell?

  A cell without a nucleus or membrane (bacteria)
• what is a stem cell?

  an undifferentiated cell that can differentiate into one or more specialised cell types
• where can stem cells be found?

  bone marrow
• what are embryonic stem cells?

  stem cells found in embryos that can differentiate into any specialised cell
• where are embryonic stem cells found?

  the mass of a developing embryo (from fertility clinics)
• what is therapeutic cloning?

  patient‘s cells are used to create an early embryo clone of themselves to treat their medical condition
• give one advantage of using therapeutic cloning

  1. stem cells from the embryo are not rejected when transplanted because they have the same genes as the patient
• what is cell division by mitosis

  body cells divide to form two identical daughter cells
• what is the purpose of mitosis?

  for the growth and repair of cells
• what happens during mitosis?


  one set of chromosomes is pulled to each end of the cell and the nucleus divides
• what happens during the first stage of the cell cycle?

  • cell grows bigger
  • chromosomes duplicate
• what happens during the third stage of the cell cycle?

  • the cytoplasm and cell membrane divide which forms two identical daughter cells