Ideas in this flowchart

• Multicellular organisms are organized into levels that coordinate cell functions and carry out life’s biological processes.
• Unicellular organisms function independently, whereas cells in multicellular organisms depend on one another.
• The five levels of organization in multicellular organisms are cells, tissues, organs, organ systems, and organisms.
• Cells are the basic structural and functional units of all life.
• Tissues are groups of cells with a common structure and function that work together.
• Organs are groups of tissues arranged to support a common physiological function.
• Organ systems consist of two or more organs that support a specific physiological function.
• An organism is a complete living system capable of conducting all life’s biological processes.
• Examples of cells include red blood cells and nerve cells.
• The four basic types of human tissue are connective, epithelial, muscle, and nerve tissue.
• Examples of organs include the brain, liver, and heart.
• Examples of organ systems include the digestive system and central nervous system.