Question R4 Q21 - NSB Double Elimination 2012

When a G-protein coupled receptor binds to its ligand, which of the following is the most direct outcome?

W) The G protein binds the ligand-bound receptor

X) The G protein releases GDP and binds GTP

Y) The G protein hydrolyzes GTP into GDP and inorganic phosphate

Z) Adenylyl cyclase converts ATP into cyclic AMP

Science Bowl Question