Q.

Receptor sites for neurotransmitters are present on               [2017]

1 pre-synaptic membrane  
2 tips of axons  
3 post-synaptic membrane  
4 membranes of synaptic vesicles  

Ans.

(3)

Neurotransmitter is a chemical substance responsible for transmission of nerve impulse across synapse. It is released by synaptic vesicle into the synaptic cleft. Neurotransmitter binds with protein receptor molecule present on post synaptic membrane causing its depolarisation and generation of action potential.