Stem cells

• Name the two types of stem cells found in animals.

  Adult stem cells

  Embryonic stem cells
• What are two key features of stem cells:

  1. They can divide by ______ to form more cells.
  2. They can ________ into specialised cells.

  mitosis

  differentiate
• 1. When a sperm cell _____  an egg cell they form a single cell called a _____.
  2. This cell then divides by ____ to form a ball of cells which we call an _____.
  3. The cells in this embryo are known as ________ stem cells and can ________ into any type of cell. 

  fertilisers

  zygote

  mitosis

  embryo

  embryonic

  differentiate
• Can adult stem cells divide by mitosis?

  Yes
• Can adult stem cells differentiate into all types of specialised cell?

  No - Adult stem cells can only differentiate into different types of blood cells, e.g. white blood cells, red blood cells and platelets. 
• Where in the body are adult stem cells found?

  Bone marrow
• What do we call the plant tissues that are continually growing and that contain stem cells?

  Meristems
• Which two parts of the plant contain meristem tissue?

  Tips of the roots

  Tips of the shoots
• Do plant stem cells persist for the plant's entire life?

  Yes