After reading the paragraphs below, answer the questions that follow.
Curare is a potent neurotoxin extracted from the Strychnos toxifera plant in Central and South America. Indigenous peoples of South America applied curare to arrows, which they used to hunt and kill animals. Curare acts at synapses between motor neurons and skeletal muscle cells. When a motor neuron synapses with a skeletal muscle cell, the skeletal muscle cell may be stimulated or inhibited just like postsynaptic neurons are. Curare acts by binding temporarily to acetylcholine receptors on the postsynaptic cell and prevents acetylcholine from binding.
Which could be an effective treatment for curare poisoning?
◦ a drug that promotes acetylcholine reuptake into the presynaptic cells
◦ a drug that inhibits acetylcholinesterase (an enzyme that breaks down acetylcholine)
◦ a drug that removes acetylcholine receptors from the postsynaptic cell
Adding additional amounts of ethyl alcohol (ethanol) increases the frequency reading.
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