Stem Cells

• Name two things stem cells are able to do.

  Able to divide by mitosis to form more cells.

  Able to differentiate into specialised cells, e,g nerve cell and skin cells
• When a sperm cell fertilises an egg cell they form to single cell called a?

  Zygote
• When the cell divides by mitosis they form a ball of cells which we call a ______?

  Embryo
• The cells in a embryo are known as embryonic stem cells and can ____________ into any type of cells

  differentiate
• What do bone marrow contain?

  Adult stem cells
• What can adult stem cells in the bone marrow do?

  Divide by mitosis

  can only differentiate into different types of blood cells, e.g. blood, white blood cells and platelets
• Where are plant stems found?

  In plant tissue called meristems
• Where are meristems found?

  in the area of the plant that are continually growing e.g roots and shoots
• Unspecialised stem cells differentiate into all cells and tissue that the plant needs. Give 3 examples

  Palisade Cells

  Phloem and Xylem

  Root hair cells
• What do plant stem cells do?

  Persists for the plants entire life
• Name two types of stem cells that are found in animals.

  Adult stem cells

  Embryonic stem cells
• Two key features of mitosis

  1. Divide by mitosis to form more cells
  2. can differentiate into specialised cells
• Why cant adult stem cells differentiate into all types of cells?

  because adult stem cells differentiate into different blood cells. e.g. white, red blood cells and platelets