Botulism Toxin Inhibits the Potentiation of Nerve Impulses by Interfering

question 12

Multiple Choice

Botulism toxin inhibits the potentiation of nerve impulses by interfering with what aspect of acetylcholine signaling?

• A) prevents calcium channel opening, thus preventing the influx of calcium needed to release acetylcholine
• B) prevents acetylcholine vesicles from fusing with the presynaptic neuronal membrane
• C) acts as an acetylcholinesterase to degrade acetylcholine in the synaptic cleft before it can bind to receptors on the postsynaptic neuron
• D) binds to receptors on the postsynaptic neuron with very high affinity, preventing acetylcholine from binding
• E) none of the above

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