Amplification of a Second-Messenger Cascade Can Take Place at Which

Multiple Choice

Amplification of a second-messenger cascade can take place at which level of a signal cascade?

A) One activated receptor can activate numerous G proteins.
B) One activated G protein can activate numerous effector enzymes.
C) One active effector enzyme can catalyze numerous reactions.
D) One activated protein kinase can allosterically modulate numerous proteins.
E) All of the choices are correct.