Which of the Following Statements About G Proteins Is INCORRECT

Multiple Choice

Which of the following statements about G proteins is INCORRECT?

A) G-proteins link the receptor protein to the signalling pathway of a specific ligand.
B) G-proteins produce second messengers to activate adenylyl cyclase to amplify the signal.
C) G-protein-linked receptors have seven transmembrane domains and act through G-proteins to alter the activity of an ion channel.
D) Intracellular processing of signals may involve G-proteins, leading to a release of Ca²⁺ ions in the cell.
E) G-protein-linked receptors have seven transmembrane domains and act through G-proteins to alter the activity of an intracellular enzyme.