biology unit

1234567891011121314151617181920
Across
  1. 4. idea that all living things are composed of cells
  2. 5. Threadlike structures made of DNA molecules that contain the genes.
  3. 6. basic unit of life
  4. 7. made of one cell
  5. 8. makes protein
  6. 12. An organelle found in large numbers in most cells,
  7. 13. cells without a nucleus
  8. 15. a living thing
  9. 16. brain of the cell
  10. 17. Wall A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.
  11. 19. DNA segments that serve as the key functional units in hereditary transmission.
  12. 20. made up multiple cells
Down
  1. 1. A tiny cell structure that carries out a specific function within the cell
  2. 2. Membrane A cell structure that controls which substances can enter or leave the cell.
  3. 3. organisms that get their food from other organisms.
  4. 4. a jelly like fluid
  5. 9. cells with a nucleus
  6. 10. organisms that make their own food.
  7. 11. stores water salts and proteins
  8. 14. An organelle where photosynthesis occurs, found in plant cells.
  9. 18. Membrane A cell structure that controls which substances can enter or leave the cell.