The cellular component that, once activated by the binding of an extracellular messenger to a surface receptor, in turn activates cyclic AMP is
A) phospholipase C.
B) adenylate cyclase.
C) calmodulin.
D) calcium.
E) cyclic guanosine monophosphate.

Question

Quizplus · Accepted Answer

Adenylate cyclase is the enzyme responsible for synthesizing cyclic AMP from ATP. It is activated by the binding of an extracellular messenger to a surface receptor.

The Cellular Component That, Once Activated by the Binding of an Extracellular