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A) Acetyl choline B) Nor epinephrine ...

A) Acetyl choline
B) Nor epinephrine
C) Serotonin the common feature of the above

A

All are drugs

B

All are neurotransmitters

C

All are antigens

D

All are hormones

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the substances**: The question lists three substances: Acetylcholine, Norepinephrine, and Serotonin. 2. **Classify the substances**: All three substances are classified as neurotransmitters. Neurotransmitters are chemicals that transmit signals across a synapse from one neuron to another. 3. **Function of neurotransmitters**: Neurotransmitters are released at the end of a nerve fiber when a nerve impulse arrives. They diffuse across the synapse (the junction between two neurons) and facilitate the transfer of the nerve impulse to the next neuron. 4. **Conclusion**: Since all three substances (Acetylcholine, Norepinephrine, and Serotonin) share the common feature of being neurotransmitters, the correct answer to the question is that they are all neurotransmitters. 5. **Final Answer**: The common feature of Acetylcholine, Norepinephrine, and Serotonin is that they are all neurotransmitters. ---
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