Specialised cells

• unicellular

  Composed of one cell (like bacteria)

  
• multicellular

  Composed of many cells (like plants and animals)

  
• red blood cells


  Cell that carries oxygen throughout the body

  
• hemoglobin

  iron-containing protein that makes blood red and holds oxygen

  
• white blood cells

  Cell that fights infection and disease in the body

  
• neuron


  sends electrical impulses throughout the body to help the brain to control the body

  
• stem cell


  Cell that can differentiate to any cell in the body

  
• muscle cell

  Cell that contracts to help move the body

  
• cell

  Basic unit of life

  
• tissue

  Group of similar cells that work together for a specific function in the body
• organ

  group of different tissues that function together
• organ system

  group of organs that work together to perform a major function in the body

  
• egg

  female sex cell

  
• sperm


  male sex cell

  
• eukaryotic cell

  a cell that has a nucleus and other membrane-bound organelles

  
• prokaryotic cell

  a cell that doesn't have a nucleus and other large organelles

  
• organism

  A living thing