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Solution


Q.

Select the incorrect statement regarding synapses.              [2022]
1 The membranes of presynaptic and postsynaptic neurons are in close proximity in an electrical synapse.  
2 Electrical current can flow directly from one neuron into the other across the electrical synapse.  
3 Chemical synapses use neurotransmitters.  
4 Impulse transmission across a chemical synapse is always faster than that across an electrical synapse.  

Ans.

(4)

Impulse transmission across an electrical synapse is always faster than that across chemical synapse.