Y7 Living Systems

12345678910111213141516171819202122
Across
  1. 3. Main organ in the circulatory system
  2. 6. Piece of glass used to display objects under the microscope
  3. 8. Living thing
  4. 13. Hole filled with liquid, found in many cells
  5. 14. Surface area _______ volume = surface area to volume ratio
  6. 16. Green part that helps a plant cell to make food
  7. 17. Tiny bag in the lung that increases the lung's surface area
  8. 18. Gas needed for aerobic respiration
  9. 19. All cells have one of these surrounding the cytoplasm
  10. 22. Type of unicellular organism that surrounds and digests its food
Down
  1. 1. Plant cells are surrounded by a cell ______
  2. 2. Colour of blood cell that has no nucleus
  3. 4. Many similar cells joined together
  4. 5. Smallest part of any living thing
  5. 7. Breathe in
  6. 9. Substance needed for a chemical reaction to happen
  7. 10. This part controls the cell
  8. 11. One of the bones surrounding the thorax
  9. 12. Device used in the lab to look at very small things
  10. 15. Sheet of muscle under the lungs that helps with breathing
  11. 20. Cells respire in order to release this
  12. 21. Main organ of the nervous system