Which term describes groups of similar cells working together to perform a function?

• A. Cell
• B. Tissue
• C. Organ
• D. Organ System

Answer: (B)

Groups of similar cells that work together to perform a function describe tissue. Cells specialize, and when many of the same type group up, they form a tissue that can carry out a shared job more efficiently than a single cell could. For example, muscle tissue contains cells that contract to produce movement, while epithelial tissue lines surfaces and forms barriers. Tissues then combine to form organs, like the stomach, which uses several tissue types to digest food. Organs, in turn, group into organ systems that manage broader bodily functions. So this term is the one that specifically captures the idea of many similar cells acting together toward a common task.