Multiple Choice
IP3 in signaling mechanisms
A) Is released form phosphatidylinositol bisphosphate in the plasma membrane
B) Is synthesized from inositol bisphosphate in the cytosol
C) Bind s to IP3 receptors on the ER, causing an Increase in cytosolic [Ca2+ ]
D) Is the main signaling chemical in Gs m echanisms
E) Both A and C are correct
Correct Answer:
Verified
Correct Answer:
Verified
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
Q11: Small molecular weight lipophilic hormones usually<br>A) Bind
Q12: The fastest way to get a signal
Q13: W hich of the following receptors DO
Q14: A signaling molecule that is secreted into
Q15: Increasing cytosolic [Ca<sup>2+</sup>] is more useful as