Cells and Life

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Across
  1. 1. fluid inside a cell that contains salts and other molecules
  2. 5. membrane bound organelle that uses light energy and makes food
  3. 6. network of threadlike proteins inside a cell
  4. 10. living things are made of one or more cells
  5. 11. directs all cell activities and contains DNA
  6. 12. substance that forms by joining many small molecules
  7. 14. outer covering
  8. 15. purpose for which something is used
Down
  1. 2. membrane bound cell structure with a specialized function
  2. 3. explanation based on scientific knowledge
  3. 4. one or more sugar molecules
  4. 6. stiff structure outside the cell membrane
  5. 7. macromolecule that forms when a long chain of nucleotides join together
  6. 8. long chain of amino acid
  7. 9. protects the inside of a cell from the environment
  8. 13. large macromolecule that does not dissolve in water