Biology

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Across
  1. 3. of various water-soluble compounds having a sour taste
  2. 5. system /The organs responsible for eliminating
  3. 6. simplest structural unit of an element or compound
  4. 8. system /The organs that are responsible for
  5. 12. on free air
  6. 13. a way of thinking
  7. 14. organism that makes its own food
  8. 16. interacting with their physical environment
  9. 21. of the relations of organisms to their environment
  10. 23. proteins and package them into vesicles
  11. 24. the entire body
  12. 26. containing chlorophyll and other pigments
  13. 27. materials
Down
  1. 1. mouth, stomach and intestines
  2. 2. products from the human body
  3. 4. all cell activities
  4. 7. organs that make and send special chemical messengers called hormones
  5. 9. compounds containing an amino group and acid group
  6. 10. down
  7. 11. supporting tissue of an organ (as opposed to parenchyma)
  8. 15. covering of plant cells that protects and keeps its shape
  9. 17. system /The blood, blood vessels and the
  10. 18. on free air
  11. 19. property of sticking together
  12. 20. living part of an ecosystem
  13. 22. that carry on the cell’s processes
  14. 25. monosaccharide sugar that has several forms