Difficulty: Medium
Average Score: 83%
Simulated
Which of these is a neurotransmitter?
Correct answer
C
Rationale
Correct Answer: C: Acetylcholine (ACh)
Rationale: Acetylcholine is a neurotransmitter that plays a crucial role in transmitting signals in the nervous system. It is released by neurons at the synapse to communicate with other neurons or target cells. ACh is involved in various functions such as muscle contractions, memory, and learning. It is synthesized from choline and acetyl coenzyme A. Monoamine oxidase (A) and cholinesterase (B) are enzymes involved in the breakdown of neurotransmitters, not neurotransmitters themselves. Calcium (D) is an essential mineral for various cellular functions but is not a neurotransmitter.
Rationale: Acetylcholine is a neurotransmitter that plays a crucial role in transmitting signals in the nervous system. It is released by neurons at the synapse to communicate with other neurons or target cells. ACh is involved in various functions such as muscle contractions, memory, and learning. It is synthesized from choline and acetyl coenzyme A. Monoamine oxidase (A) and cholinesterase (B) are enzymes involved in the breakdown of neurotransmitters, not neurotransmitters themselves. Calcium (D) is an essential mineral for various cellular functions but is not a neurotransmitter.