Which of the following statements is FALSE about electrical synapses?
a. Small metabolites, like ATP, can be shared between cells through gap junction channels.
b. Transmission is initiated when the rise in intracellular calcium causes gap junctions to open.
c. Electrical signals are passively conveyed from presynaptic to postsynaptic cells.
d. Signaling is bidirectional.
e. More than one of the above is false.
