Grade 7-Worksheet #2.1

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Across
  1. 1. Similar cells form together to form a functional unit
  2. 4. What device can we use to see cells
  3. 6. Membrane, protective layer that envelops the cytoplasm
  4. 7. Main life activities occur
  5. 11. Many-celled
  6. 15. No ribosome
  7. 16. long thread-like structures, which are made up of molecules of proteins and DNA
  8. 17. makes up the genes
  9. 18. Associated with ribosome
  10. 19. A hair-like projection that helps remove dust particles from the air as we inhale
  11. 20. Bright yellow and brown colors in plants
  12. 21. One or more types of tissues that are organized in one unit
Down
  1. 2. One-celled
  2. 3. Where protein molecules are formed
  3. 5. Hold the structure of the plant
  4. 8. Powerhouse of the cell
  5. 9. Where genetic material is found
  6. 10. The basic unit of life
  7. 12. Cream Yellow Orange and red colors in plants
  8. 13. Green pigments in plants
  9. 14. Destroys invading viruses and bacteria