Epinephrine increases available glucose by binding to a cell surface receptor that activates a G protein, which then activates cAMP-dependent protein kinase, then phosphorylase kinase, and finally glycogen phosphorylase, which breaks down glycogen into glucose-1-phosphate. This is an example of
A) a network.
B) a signaling pathway.
C) crosstalk.
D) a feedback loop.

Question

Quizplus · Accepted Answer

This is an example of a signaling pathway where a specific molecule, epinephrine, binds to a cell surface receptor and triggers a cascade of events that ultimately leads to the breakdown of glycogen into glucose-1-phosphate.

Epinephrine Increases Available Glucose by Binding to a Cell Surface