Unit 4 AP Bio

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Across
  1. 4. the addition of a phosphate group to a protein to change its activity
  2. 6. programmed cell death
  3. 7. a control point where stop-and-go decisions regulate the cell cycle
  4. 10. a small molecule that relays a signal inside the cell
  5. 11. a protein that relays signals from a GPCR to other proteins inside the cell
  6. 12. the phase of the cell cycle where the cell grows and replicates DNA
  7. 13. a protein that helps regulate the cell cycle
  8. 14. a signaling molecule that binds to a receptor
  9. 15. a protein that receives a signal molecule and triggers a cellular response
  10. 17. division of the nucleus in eukaryotic cells
Down
  1. 1. uncontrolled cell division due to loss of cell cycle regulation
  2. 2. a receptor that opens or closes a channel when a ligand binds
  3. 3. an enzyme that adds phosphate groups to proteins
  4. 4. an enzyme that removes phosphate groups from proteins
  5. 5. a receptor that activates a G protein when ligand binds
  6. 8. the process by which a cell converts an external signal into a response
  7. 9. a cyclin-dependent kinase that helps control cell cycle events
  8. 16. a cyclic molecule that commonly acts as an internal signal amplifier