If serotonin levels are high:
a. the animal is likely feeling drowsy or beginning to sleep.
b. there is a decrease of EEG-measured cortical arousal.
c. the animal is dreaming.
d. the animal is awake.
Answer: D
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What does a person who has cystic fibrosis, a life-threatening lung disease, have in common with a person who has a cleft chin?
a. They both received their condition from the genes passed from their mother. b. They both received their condition as a result of a dominant set of gene alleles. c. They both received their condition from a single gene pair. d. They both received their condition as a function of mitotic mutation.
As children improve their ability to inhibit responses to irrelevant stimuli, they improve their ability to sustain ________
Fill in the blank with the appropriate word.