Considering their effects on acetylcholine (ACh), the poison curare _____ and the poison botulinum _____.

Question

Quizplus · Accepted Answer

Curare and botulinum both affect acetylcholine, but in opposite ways. Curare occupies the receptor sites for ACh, preventing it from binding and causing muscle contraction. Botulinum, on the other hand, blocks the release of ACh from the presynaptic neuron, which also prevents muscle contraction. Therefore, the correct choice is C, since both poisons occupy receptor sites but have opposite effects on ACh release.

Considering Their Effects on Acetylcholine (ACh), the Poison Curare _____