In order from largest to smallest, the structures of the gustatory system on the tongue are
A. papillae, taste receptor, taste bud.
B. papillae, taste bud, taste receptor.
C. taste receptor, papillae, taste bud.
D. taste receptor, taste bud, papillae.
Answer: B
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Frequent use of which of the following drugs might increase symptoms in schizophrenia?
A. tobacco B. alcohol C. marijuana D. heroin
Ryan's little brother frequently wakes up screaming a few hours after going to bed and complains about a "bear" sitting on him. It is likely that Ryan's brother is experiencing
A. myoclonia. B. a sleep terror. C. a nightmare. D. lucid dreaming.
In an experiment, researchers can be reasonably confident that the treatment brought about the observed results if they use
A) different geographic regions for their study. B) valid treatments in the study. C) random assignment of study participants to treatment groups. D) experimental groups in the study.
Which of the following is true about the causes of intellectual disabilities?
A. Genetic abnormalities are a significant cause of intellectual disabilities. B. The only two genetic causes for intellectual disabilities are Down syndrome and Fragile X syndrome. C. Epigenetics does not play an important role in increasing an individual's risk of developing intellectual disabilities. D. The expression of a gene is independent of diet and living conditions.