Cells

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Across
  1. 5. The tough covering around the plant cells
  2. 7. Membrane thin boundary layer around the cell
  3. 8. any organism that lacks a distinct nucleus and other organelles due to the absence of internal membranes
Down
  1. 1. are specialized structures that perform various jobs inside cells
  2. 2. one of the liquids found inside cells
  3. 3. an organelle found in large numbers in most cells
  4. 4. Are cells filled with water
  5. 6. The control center of the cell