Answer
Adenylate cyclase is a transmembrane protein.
G protein is a peripheral protein.
Work Step by Step
Adenylate cyclase is a transmembrane protein because it occurs on both sides of the membrane. In the figure 3.9, you can clearly see that it occurs across the whole membrane.
G protein is a peripheral protein because it's only on the inner cellular membrane. It only occurs on one side of the cell membrane.
