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B
Through gap junctions present between two synaptic membranes
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C
Electrons that jump directly from pre-synaptic membrane to post-synaptic membrane
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D
Opening of K+ channels in post-synaptic membrane
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Solution
The correct option is B Through gap junctions present between two synaptic membranes Electrical synapse have negligible gap between pre-synaptic and post-synaptic membrane. Impulse from pre-synaptic membrane reach post-synaptic membrane through gap junctions present between two synaptic membranes and there is no release of neurotransmitters. In chemical synapse, neurotransmitters are released in synaptic cleft.