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3 Cards in this Set

  • Front
  • Back
Cell signalling starts when one cell releases a ..1.. (e.g a hormone). This molecule travels to another cell(e.g in the blood) The messenger molecule is detected by the cell because it binds to a ..2.. on its cell membrane. The binding then triggers a ..3..
1=Messenger molecule
2=Receptor
3=Chemical reaction
Receptor molecules have specific shapes. Only messenger molecules with a ..1.. can bind to them. Different cells have different types of receptors and respond to different type of messenger molecules. A cell that responds to a particular messenger molecule is called a ..2.. .
1=Complementary shape
2=Target cell
Many drugs work by binding to receptor molecules in cell membranes. They work by ...
Triggering a response in the cell or blocking the receptor and prevents it from working.