Which gives the correct order from lowest to highest number of molecules activated by a single molecule of epinephrine in liver cells?
A) cAMP, protein kinase A, phosphorylase kinase, glycogen phosphorylase
B) Glycogen phosphorylase, phosphorylase kinase, protein kinase A, cAMP
C) cAMP, phosphorylase kinase, glycogen phosphorylase, protein kinase A
D) Glycogen phosphorylase, cAMP, protein kinase A, phosphorylase kinase
E) Phosphorylase kinase, glycogen phosphorylase, cAMP, protein kinase A

Question

Quizplus · Accepted Answer

The correct order from lowest to highest number of molecules activated by a single molecule of epinephrine in liver cells follows the signal transduction pathway: epinephrine binds to its receptor, leading to the activation of adenylate cyclase, which converts ATP to cyclic AMP (cAMP). cAMP then activates protein kinase A, which in turn activates phosphorylase kinase. Finally, phosphorylase kinase activates glycogen phosphorylase, which breaks down glycogen into glucose. This sequence illustrates the amplification of the signal, with cAMP being the first molecule activated in the cascade and glycogen phosphorylase being the last, with the highest number of molecules activated.

Which Gives the Correct Order from Lowest to Highest Number