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