Specialisation of Cells

• What is the basic unit of life?

  The cell
• What defines multicellular organisms?

  They consist of more than one cell
• How many cells can multicellular organisms contain?

  Billions of cells
• What are examples of different cell types in multicellular organisms?

  Muscle cells, white blood cells, nerve cells
• Why are different cell types in multicellular organisms specialized?

  To carry out different functions
• What is the function of red blood cells?

  Transport oxygen
• What is the function of sperm cells?

  Move towards and fertilize ova
• What are tissues composed of?

  Many similar cells
• What is the function of mesophyll tissue in plants?

  Carry out photosynthesis
• What is an organ made up of?

  Different tissues working together
• What types of tissues does the skin contain?

  Nervous, epithelial, and vascular tissue
• What do organs and tissues form together?

  Groups that make up systems
• What components make up the circulatory system?

  Blood, heart, arteries, veins, capillaries
• What is the hierarchy of biological organization from basic to complex?

  Cells -> tissues -> organs -> systems