Epinephrine activates the cyclic AMP pathway in liver cells. In this example, epinephrine is a ____________ and cAMP is a _____________.

Question

Quizplus · Accepted Answer

Epinephrine is a first messenger as it binds to a specific receptor on the surface of liver cells. The activation of this receptor leads to the production of a second messenger, cAMP, which then initiates a signaling cascade within the cell. Therefore cAMP is a second messenger in this pathway.

Epinephrine Activates the Cyclic AMP Pathway in Liver Cells