22. In an active state of a G protein,
a. the alpha subunit binds to a target protein and the
beta-gamma subunit remains bound to the receptor.
b. the alpha and beta-gamma subunits both can bind to target
proteins.
c. the alpha-beta and gamma subunits both can bind to target
proteins.
d. the gamma subunit can bind to a target protein and the
alpha-beta subunit remains bound to the receptor.