Question

multiple select question
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which of the following are true of neurotransmitters?

• there are several types of neurotransmitters.
• all neurons are capable of receiving messages from any type of neurotransmitter.
• a neurotransmitter must fit precisely into a receptor site to make chemical communication possible.
• each kind of neurotransmitter has a distinctive configuration that allows it to fit into a specific type of receptor site.

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Explanation:

• "There are several types of neurotransmitters" is true (e.g., dopamine, serotonin, etc.).
• "All neurons can receive any neurotransmitter" is false (neurons have specific receptors).
• "Neurotransmitter must fit receptor" is true (like a key - lock mechanism).
• "Each neurotransmitter has a distinctive configuration for a specific receptor" is true (specificity in binding).

Answer:

• There are several types of neurotransmitters.
• A neurotransmitter must fit precisely into a receptor site to make chemical communication possible.
• Each kind of neurotransmitter has a distinctive configuration that allows it to fit into a specific type of receptor site.