In people with normal circadian clocks, what effect does melatonin taken in pill form have on jet lag?
A. It helps people to adjust to jet lag.
B. It helps people to adjust to jet lag, but only if traveling east to west.
C. It helps people to adjust to jet lag, but only if traveling west to east.
D. It was no more effective than a placebo in reducing jet lag.
Answer: D
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Long-term memory is normally capable of retaining how many pieces of information??
a. ?seven pieces of information b. ?fivetonine chunks of information c. ?an indefinite amount of information d. ?about one million pieces of information
The phenomenon whereby higher doses of a drug are required to produce its original effects is __________
a. a craving b. potentiation c. tolerance d. withdrawal
How many of the 46 chromosomes that most human beings have ultimately determine our sex?
a. 5 b. 3 c. 1 d. 0 – Sex is not determined by chromosomes, but rather by individual genes.
The most heavily promoted brands of cigarettes are those most often chosen by adolescent smokers
Indicate whether this statement is true or false.