No Matter How the Signal Initiated by the Binding of an Extracellular

Multiple Choice

No matter how the signal initiated by the binding of an extracellular ligand is,what is the outcome of that signal?

A) A protein in the middle of an intracellular signaling pathway is activated.
B) A protein at the top of an intracellular signaling pathway is activated.
C) A protein at the top of an extracellular signaling pathway is activated.
D) A protein at the top of an intracellular signaling pathway is deactivated.
E) A protein at the bottom of an intracellular signaling pathway is activated.