Question

question 5
3 tries left
the venom of a black widow spider acts as a(n) ______ by mimicking the effects of acetylcholine.

○ protagonist
○ glial cell
○ antagonist
○ agonist

Explanation:

To solve this, we analyze each option:

• "Protagonist" is a literary term, not related to neurochemistry.
• "Glial cell" is a type of cell in the nervous system, not a substance that mimics a neurotransmitter.
• "Antagonist" blocks or opposes the effects of a neurotransmitter, but the venom mimics acetylcholine's effects.
• "Agonist" is a substance that mimics the effects of a neurotransmitter (like acetylcholine here). So the venom acts as an agonist.

Answer:

D. agonist