cell organisation

• What are the different levels of organization within a multicellular organism?

  Organelles, cells, tissues, organs, organ systems, and organisms
• What are organelles also called?

  Subcellular structures
• What is the role of organelles in a cell?

  Each organelle has a specific role to play
• Name three examples of organelles.

  Nucleus, ribosomes, and mitochondria
• What do we call different types of cells that have specialized functions?

  Specialized cells
• Give examples of specialized cells.

  Epithelial cells, muscle cells, and glandular cells
• How can tissues be described?

  A group of similar cells that work together to carry out a particular function
• What type of tissue is formed by lots of epithelial cells?

  Epithelial tissue
• What is the function of epithelial tissue?

  To cover the body's surfaces
• What type of tissue is formed by muscle cells?

  Muscle tissue
• What is the function of muscle tissue?

  To contract and relax to move different parts of the body
• What type of tissue is formed by glandular cells?

  Glandular tissue
• What is the role of glandular tissue?

  To make and secrete chemicals like enzymes and hormones
• What is the definition of an organ?

  A group of different tissues that work together to perform a particular function
• How does the definition of an organ differ from that of a tissue?

  An organ is made up of different tissues, while a tissue is made up of similar cells
• What organ is formed by epithelial, muscular, and glandular tissues?

  The stomach
• What is the function of the stomach?

  To kill microorganisms and break down proteins
• What is an organ system?

  A group of organs that work together to perform a particular function
• What is the role of the digestive system?

  To digest food and absorb nutrients
• Name two other organ systems besides the digestive system.

  The cardiovascular system and the reproductive system
• What is the highest level of organization in a multicellular organism?

  The organism itself
• How many different organ systems are there in the human body?

  About 12
• Name three examples of organ systems in the human body.

  The immune system, nervous system, and respiratory system
• What are the levels of organization in a multicellular organism?


  • Organelles
  • Cells
  • Tissues
  • Organs
  • Organ systems
  • Organism
• How do organ systems work together in a multicellular organism?

  • Organ systems collaborate to maintain homeostasis
  • Each system has specific functions that support the organism
  • Example: The digestive system works with the cardiovascular system to distribute nutrients