1. Which enzyme plays a role in regulating rhodopsin-induced closing of cation c
ID: 173624 • Letter: 1
Question
1. Which enzyme plays a role in regulating rhodopsin-induced closing of cation channels?
guanylyl cyclase
adenylyl cyclase
phosphodiesterase
guanylyl cyclase and phosphodiesterase
2. Which of the following events occur during the epinephrine-stimulated conversion of glycogen to glucose-1-phosphate?
activation of PKA by cAMP
inhibition of glycogen synthase
activation of glycogen phosphorylase
all of the above
a.guanylyl cyclase
b.adenylyl cyclase
c.phosphodiesterase
d.guanylyl cyclase and phosphodiesterase
Explanation / Answer
The answer for 1 is - d. Guanylyl Cyclase and Phosphodiesterase
During Visual phototransduction, they both help in the closure of the cation channels
The answer for 2 is - d. All of the above
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