Incorrect statement about electrical synapse is

Options

A. The neurotransmitter released from the pre-synaptic membrane binds to receptors on the postsynaptic membrane
B. Impulse conduction occurs at faster rate
C. Pre-synaptic and post-synaptic neurons are very close to each other at synapse
D. No requirement of neurotransmitters

Answer

To determine the incorrect statement about electrical synapses, let's analyze each option step by step.

### Step 1: Understand Electrical Synapses
Electrical synapses are specialized junctions where electrical signals are directly transmitted between neurons. This is different from chemical synapses, where neurotransmitters are released.

### Step 2: Analyze Each Option
1. **Option A**: "Neurotransmitter released from presynaptic membrane binds to receptor on postsynaptic membrane."
- In electrical synapses, there are no neurotransmitters involved. Instead, the signal is transmitted directly through gap junctions. Thus, this statement is incorrect.

2. **Option B**: "Impulse conduction occurs at a faster rate."
- This statement is true. Electrical synapses allow for faster signal transmission compared to chemical synapses because they do not require the release and binding of neurotransmitters.

3. **Option C**: "Presynaptic and postsynaptic neurons are very close to each other at the synapse."
- This statement is also true. In electrical synapses, the synaptic cleft is very small, allowing for close proximity between the presynaptic and postsynaptic neurons.

4. **Option D**: "No requirement of neurotransmitter."
- This statement is true as well. Electrical synapses do not require neurotransmitters for signal transmission.

### Step 3: Identify the Incorrect Statement
From the analysis:
- The only incorrect statement is **Option A**, as it incorrectly describes the mechanism of electrical synapses.

### Conclusion
The incorrect statement about electrical synapses is:
**"Neurotransmitter released from presynaptic membrane binds to receptor on postsynaptic membrane."**