[Campbell Biology P.265] Considering Sutherland's experiment where epinephrine stimulates gl... | Practice Question

Considering Sutherland's experiment where epinephrine stimulates glycogen breakdown, how would epinephrine fit into the general cell signaling diagram Figure 11.6 ?

  • A: Epinephrine is one of the three relay molecules in the transduction pathway.
  • B: Epinephrine acts as the receptor protein on the plasma membrane.
  • C: Epinephrine is the signaling molecule detected by the cell.
  • D: Epinephrine represents the cellular response, specifically the release of glucose.

Explanation

Figure 11.6 shows a 'Signaling molecule' binding to a 'Receptor'. The text describes epinephrine as the hormone that triggers glycogen breakdown, making it the external signaling molecule that the target cell detects.