An activated G protein can trigger
A) the opening of calcium ion channels in the membrane.
B) the release of calcium ions from intracellular stores.
C) a fall in cAMP levels.
D) a rise in cAMP levels.
E) all of the above

Question

Quizplus · Accepted Answer

An activated G protein can trigger both the opening of calcium ion channels in the membrane and the release of calcium ions from intracellular stores. In addition, depending on the type of G protein and the associated effector protein, it can either cause a fall or a rise in cAMP levels. Therefore, all of the above options (A, B, C, and D) are correct.

An Activated G Protein Can Trigger