The closure of sodium channels is mediated by a decrease in the cytosolic concentration of_________ , which is degraded by_________ .
A) cAMP : ATP synthase
B) cAMP : phosphodiesterase
C) cAMP : transducin
D) cGMP : transducin
E) cGMP : phosphodiesterase

Question

Quizplus · Accepted Answer

The closure of sodium channels is often mediated by a decrease in the cytosolic concentration of cyclic guanosine monophosphate (cGMP), which is degraded by phosphodiesterase. This mechanism is particularly noted in the phototransduction pathway in the retina.

The Closure of Sodium Channels Is Mediated by a Decrease