Sequence the following events correctly. 1. Neurotransmitter diffuses across cleft. 2. Calcium induces exocytosis of neurotransmitter. 3. Permeability of postsynaptic membrane altered. 4. Ion channels open. 5. Neurotransmitter binds to receptor.

The correct sequence is 21543.

Explanation:

The procedure by which the signaling molecules known as neurotransmitters are discharged by the neuron's axon terminal and combines and reacts with the receptors present on the dendrites of another neuron or postsynaptic neuron is termed as neurotransmission.

The following are the steps followed in the process of neurotransmission:

a. Exocytosis of neurotransmitter gets stimulated by calcium.

b. The diffusion of neurotransmitter takes place across the synaptic cleft.

c. The binding of neurotransmitters takes place with the receptor.

d. After the binding opening of ion channels takes place.

e. The permeability of the postsynaptic membrane gets changed.