Biology

• What do multicellular organisms have many levels of?

  Organisation
• What are the basic building blocks of all living organisms?

  Cells
• What is the primary difference between unicellular and multicellular organisms?

  Unicellular organisms are made of one cell
• In complex multicellular organisms, what are cells specialized to carry out?

  Particular functions
• What do specialized cells form in multicellular organisms?

  Tissues
• In complex multicellular organisms, what do tissues form?

  Organs
• What do organs form in complex multicellular organisms?

  Organ systems
• Which systems in humans provide dissolved materials that need to be moved around the body?

  Digestive and respiratory
• What system transports dissolved materials around the body?

  Circulatory system
• What does the respiratory system provide to the body?

  Oxygen
• What does the digestive system provide to the body?

  Nutrients
• What does the respiratory system remove from the body?

  Carbon dioxide
• What fluid does the circulatory system use to transport materials?

  Blood