AP Biology Chapter 9 Vocabulary Crossword

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Across
  1. 3. chain of events that starts with a cell receiving a ligand and ends with the cell responding (2 words)
  2. 5. communication between cells (2 words)
  3. 8. region of a cell surface receptor that is located on the cell's surface (2 words)
  4. 9. enzyme that is activated by binding to cAMP (4 words)
  5. 13. signaling molecule secreted by bacteria to communicate with other bacteria of its kind
  6. 16. protein that binds to specific ligands
  7. 17. small space between axon terminals and dendrites of nerve cells
  8. 19. signal that is sent and received by the same cells (2 words)
  9. 20. long distance signal that is delivered by hormones through an organism's circulatory system (2 words)
  10. 21. molecule that transmits signals within a cell (2 words)
  11. 24. protein that transmits a signal from the exterior of the cell to the interior (3 words)
  12. 26. interaction of signals from 2 or more receptors that activate the same response (2 words)
Down
  1. 1. enzyme that removes phosphate group from a molecule that has been phosphorylated
  2. 2. AKA cAMP (2 words)
  3. 4. chemical compound formed when two molecules join together
  4. 6. small molecule that propagates a signal within the cell (2 words)
  5. 7. propagation of a signal through cytoplasm (2 words)
  6. 10. method of cell communication used by bacteria to sense how many similar bacteria are in an area (2 words)
  7. 11. ligand that binds to receptors and stimulates cell growth (2 words)
  8. 12. programmed cell death
  9. 14. enzyme that catalyzes the transfer of a phosphate group from ATP to another molecule
  10. 15. molecule that binds to a protein and stops it from functioning
  11. 18. communication within cells (2 words)
  12. 22. second messenger that is derived from ATP
  13. 23. molecule produced by a cell that binds with a specific receptor
  14. 25. releases ligands involved in hormone signaling (2 words)