Each Particular Metabotropic Receptor (E

Multiple Choice

Each particular metabotropic receptor (e.g., a metabotropic glutamate receptor)

A) exists one-to-one with a particular G protein complex in the cell.
B) couples to only one type of second messenger signaling system in the cytoplasm.
C) can only couple to one subtype of G protein (i.e., G_i) .
D) can couple to a variety of G proteins that are more plentiful than receptors.
E) competes with other metabotropic receptors for the same G protein.