Neuronal signals are carried across the synapse by
A) direct electrical connections between the two cells.
B) the secretion of transmitter molecules into the synapse.
C) the transfer of ions from one cell to another.
D) an inhibitory effect of a transmitter molecule on the postsynaptic membrane.
E) an influx of potassium ions into the axon terminal.
Answer: B
Rationale: Neuronal signals are carried across the synapse by the secretion of transmitter molecules into the synapse.
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