This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
How an electrical synapse is different from chemical synapse? 
Select and explain. 
A. No cytoplasmic continuity between presynaptic and post synaptic neuron, B. Connexons are involved in electrical synapse, C. Direction of impulse in unidirectional, D. Electrical synapse has more latent period than chemical synapse
B: Connexons are involved in electrical synapse
Answer: B: Connexons are involved in electrical synapse 
Explanation: At gap junctions connexous are present. It permits substances to pass between the cells without entering ECF.