Which Statement About Ligand‒receptor Complexes Is False

Multiple Choice

Which statement about ligand‒receptor complexes is false?

A) For most ligand-receptor complexes, binding, as opposed to dissociation, is favored based on chemistry's law of mass action.
B) Ligand-receptor interactions are reversible.
C) Drugs that prevent binding of receptors' specific ligands can alter human behavior.
D) After binding to a cell membrane receptor, a ligand participates in the cellular response.
E) A ligand is a chemical signal.