2. Cell Specialization The process in which cells develop in different ways to perform different tasks.
3. Tissue Group of similar cells that perform a particular function.
4. Organ Group of tissues that work together to perform closely related functions.
5. Organ System Group of organs that work together to perform a specific function.
6. Key Concept What is cell specialization? The process in which cells develop in different ways to perform different tasks.
7. Key Concept What are the four levels of organization in multicellular organisms? The levels of organization in a multicellular organism are individual cells, tissues, organs, and organ systems.
