crossword puzzle

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Across
  1. 3. a large membrane-enclosed structure containing DNA
  2. 7. captures energy from sunlight and convert it into food that contains chemical energy in a process called photosynthesis.
  3. 8. the powerhouse of the cell.
  4. 11. store materials like water, salts, proteins, and carbohydrates.
  5. 12. remove the junk that might accumulate and clutter up the cell.
Down
  1. 1. cells that enclose their DNA in nuclei.
  2. 2. a thin flexible barrier that surrounds all cells.
  3. 4. an internal membrane system in eukaryotic cells.
  4. 5. the fundamental concept of biology.
  5. 6. cells that do not enclose DNA in nuclei.
  6. 9. produces protein.
  7. 10. transports and modifies proteins in eukaryotic cells.