In the 1950s, Earl Sutherland and colleagues discovered that epinephrine ____.
A) triggers the release of a second messenger that leads to the hydrolysis of glycogen to glucose
B) triggers the release of a second messenger that lowers blood glucose by causing it to bind to liver cells
C) interacts directly with the enzyme glycogen phosphorylase
D) interacts directly with the cell membrane to help transport glucose into the cell
E) is a signaling molecule that does not require a cell surface receptor

Question

Quizplus · Accepted Answer

Earl Sutherland discovered that epinephrine triggers the release of a second messenger, cyclic AMP (cAMP), which then leads to the hydrolysis of glycogen to glucose, demonstrating the concept of second messenger systems in cellular signaling processes.

In the 1950s, Earl Sutherland and Colleagues Discovered That Epinephrine