Cells!

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Across
  1. 3. / Single-celled
  2. 5. / prokaryotic
  3. 7. / nucleus
  4. 8. / cell
  5. 9. / DNA
Down
  1. 1. / organisms
  2. 2. / Rer
  3. 4. / energy
  4. 6. / multicelluar