Which of the following is correct about the electrical synapse

Options

A. `{:("Membranes of pre-and post-synaptic neurons","Requirement of neurotransmitter"),("Are in very close proximity","yes"):}`
B. `{:("Membranes of pre-and post-synaptic neurons","Requirement of neurotransmitter"),("Are in very close proximity","No"):}`
C. `{:("Membranes of pre-and post-synaptic neurons","Requirement of neurotransmitter"),("Are not in very close proximity","yes"):}`
D. `{:("Membranes of pre-and post-synaptic neurons","Requirement of neurotransmitter"),("Are not in very close proximity","No"):}`

Answer

To solve the question regarding the characteristics of electrical synapses, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Electrical Synapses**:
- Electrical synapses are specialized junctions that allow direct electrical communication between neurons. They are formed by gap junctions, which are channels that connect the cytoplasm of adjacent cells.

2. **Proximity of Membranes**:
- In electrical synapses, the membranes of the pre-synaptic and post-synaptic neurons are in very close proximity. This close arrangement allows ions and small molecules to pass directly from one neuron to another, facilitating rapid communication.

3. **Requirement of Neurotransmitters**:
- Unlike chemical synapses, electrical synapses do not require neurotransmitters to transmit signals. In chemical synapses, neurotransmitters are released from the pre-synaptic neuron and bind to receptors on the post-synaptic neuron, which is a slower process. In contrast, electrical synapses allow for immediate transmission of signals without the need for chemical messengers.

4. **Speed of Transmission**:
- Electrical synapses are faster than chemical synapses because they allow for the direct flow of electrical current. This is due to the close proximity of the membranes and the presence of gap junctions.

5. **Conclusion**:
- Based on the characteristics of electrical synapses, we can conclude that the correct statement about electrical synapses is that the membranes of the pre- and post-synaptic neurons are in very close proximity, and there is no requirement for neurotransmitters.

### Final Answer:
- The correct option regarding electrical synapses is: **Membranes of the pre- and post-synaptic neurons are in very close proximity, and there is no requirement for neurotransmitters.**