Associate Certified Entomologist (ACE) Practice Exam

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Which neurotransmitter is crucial for synaptic transmission in both humans and insects?

  1. Dopamine

  2. Serotonin

  3. Acetylcholine

  4. Norepinephrine

The correct answer is: Acetylcholine

Acetylcholine is the neurotransmitter that plays a crucial role in synaptic transmission in both humans and insects. This substance functions as a key signaling molecule that facilitates communication between nerve cells and muscle cells at the neuromuscular junction, enabling muscle contraction and movement. In the central nervous system, acetylcholine is involved in a wide range of functions, including memory, attention, and learning. In insects, acetylcholine serves a similar purpose in the nervous system, influencing motor control and various behavioral responses. Its widespread role in synaptic transmission across different species emphasizes its fundamental importance in both human and insect biology.

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