Geraldine is taking a psychology test. She reads a multiple-choice question and realizes she doesn't know the answer. Since she doesn't know the correct answer, she decides to at least eliminate the incorrect answers. Her tactic is an example of ______

Adults spend about 20% of their sleep time in REM sleep. What percentage of the neonate's sleep time is spent in REM sleep?

30% 50% 70% 90%

Which pair of drugs below are antagonists for the muscarinic and nicotinic (respectively) receptors?

A) atropine; curare B) hemicholium; atropine C) curare; atropine D) muscarine; nicotine E) acetylcholinesterase; choline acetyltransferase