Cells

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Across
  1. 3. When one group of cells perform the same function, they become
  2. 4. the outermost rigid layer of a plant cell
  3. 5. this organelle is responsible for performing photosynthesis
  4. 7. when several tissues work together to perform a specific function, they are
  5. 8. when a group of organ systems work together, they make up an
  6. 9. this organelle is the "control center" of the cell
Down
  1. 1. the "powerhouse" of the cell and produces proteins
  2. 2. What term describes the basic structural and functional unit of any living thing?
  3. 6. a group of organs that work together to perform a specific function are called