Sequence the following events correctly.
1. Neuratransmitter diffuses acrass cleft.
2. Calcium inchuces exdcytusis of neuratransmitter
3. Permeability of postsyneptic membrane altered
4. Ian chanels apen.
5. Neuratransmitter binds to receptor.
A)1, 2, 3, 5, 4
B)1, 4, 3, 2, 5
C)2, 1, 5, 4, 3
D)3, 1, 4, 5, 2
E)5, 4, 3, 1, 2

Question

Quizplus · Accepted Answer

The correct sequence of events in a synaptic transmission is as follows:
1. Calcium influx in the presynaptic neuron causes exocytosis of neurotransmitter.
2. Neurotransmitter diffuses across the synaptic cleft.
3. Neurotransmitter binds to the receptor on postsynaptic membrane.
4. Permeability of the postsynaptic membrane is altered.
5. Ion channels open, depolarizing the postsynaptic membrane. 
Therefore, the correct sequence is 2, 1, 5, 4, 3, which is represented by choice C.

Sequence the Following Events Correctly