Besides amphetamine, what other stimulant drugs have been or are being used by athletes to improve performance? Describe the current status of each of these
What will be an ideal response?
Strychnine (apparently no longer used; too dangerous); cocaine (illegal, banned, tested for); caffeine (banned at high levels—12 ug/ml in urine); ephedrine (banned from dietary supplements since 2004).
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In certain individuals, depleting the body’s supply of the amino acid tryptophan leads to symptoms of depression due to an inability of the brain to produce
a. dopamine. b. norepinephrine. c. epinephrine. d. serotonin. e. acetylcholine.
Jessica Li held up three rows of four letters on a poster board to her high school class for a fraction of a second. She then removed it and immediately asked the class to name the letters in the top, middle, or bottom row. Based on previous research, about how many letters in the row would you expect individual students to recall?
A) none B) one C) two D) three or four