Multiple Choice
The function of PKA in G smechanisms is to
A) Alter the activity of target proteins by phosphorylating them at serine or threonine residues
B) Synthesize cAMP from ATP
C) Degrade cAMP
D) Activate proteins by directly binding to them
E) Catalyze the re-association of the and Ƴ subunits
Correct Answer:
Verified
Correct Answer:
Verified
Q1: Catalytic receptors<br>A) Bind ligands on the surface
Q2: The signaling mechanism that converts an electrical
Q4: In a Gs mechanism, what enzyme is
Q5: Turn off of a Gs mechanisms
Q6: Nuclear receptors that alter gene expression bind
Q7: Increases in cytosolic [Ca<sup>2+</sup>] can be involved
Q8: Increased cytosolic [Ca<sup>2+</sup>] involved in signaling can
Q9: The step immediately following the binding
Q10: IP<sub>3</sub> in signaling mechanisms<br>A) Is released form
Q11: Small molecular weight lipophilic hormones usually<br>A) Bind