What is a neurotransmitter according to the slides?
Answer
A chemical that transmits signals across a synapse from one neuron to another target neuron
Explanation
The slides define a **neurotransmitter** as a chemical that transmits signals across a **synapse** from one neuron to another target neuron. The other choices describe pheromonal communication, a restricted and incorrect description of steroid production, or acoustic communication.\n\n**Key takeaway:** Neurotransmitters carry chemical signals between neurons across synapses.\n\n**Glossary:** **Synapse**: The junction across which a neuron transmits a signal to a target; **target neuron**: The neuron receiving the signal.
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