When the Neurotransmitter Diffuses Across the Synaptic Cleft

Multiple Choice

When the neurotransmitter diffuses across the synaptic cleft,

A) it automatically causes depolarization of the post­synaptic membrane.
B) it can be excitatory or inhibitory, depending on the type of postsynaptic membrane.
C) a single molecule is sufficient to trigger activation of the postsynaptic membrane.
D) only a few molecules make it to the postsynaptic membrane.
E) it must move through nodes in the myelin sheath.