biology

• Cell cycle


  A series of events that cells go through to replicate themselves
• Cell cycle


  1. Gap phase 1

  2. Synthesis phase

  3. Gap phase 2

  4. Mitosis
• Animal cells


  • Usually share the ability to divide at an early stage with plant cells
  • Often continue to divide this way throughout their lifetime
• Specialised cells


  • Lose the ability to divide
• Mitosis


  1. Cell replicates its DNA

  2. Chromosomes line up

  3. Chromosomes are pulled apart

  4. Cell divides into two identical cells
• Stem cells


  Undifferentiated cells that can turn into any type of cell
• Adult stem cells


  Can only turn into a limited type of cell and are used to replace damaged cells
• Meristems


  Found in growing parts of plants, contain unspecialised cells that can become specialised
• Stem cells and meristems are examples of unspecialised cells that can become specialised to form different tissues and organs