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Multiple Choice Quiz
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1

Genetic determinism states that the expression of an inherited trait cannot be modified by the environment.
A)True
B)False
2

An example of a genetic disorder governed by a single gene that includes a behavioral component is:
A)schizophrenia
B)Huntington disease
C)Bipolar disorder
D)None of the above
3

Behavioral disorders may result from mutations in genes affecting:
A)neurotransmission
B)signal transduction
C)neuron variation
D)any of the above
4

Which of the following statements is true in the U.S. population?
A)Phobias are less prevalent than schizophrenia.
B)ADHD is less prevalent than autism.
C)Eating disorders are less prevalent than Alzheimer disease.
D)Drug addiction is less prevalent than eating disorders.
5

Which of the following statements is true regarding anorexia nervosa?
A)Only females suffer from anorexia.
B)Anorexia has the highest risk of death of any psychiatric disorder.
C)Genes whose products control appetite are not implicated in eating disorders.
D)All of the above are true regarding anorexia nervosa.
6

An individual with familial advanced sleep phase syndrome (FASPS) is likely to:
A)promptly fall asleep at the same time each night.
B)fall asleep several times during the day.
C)also suffer from cataplexy.
D)have above average intelligence.
7

Twin and adoptive studies suggest that the heritability of IQ is approximately
A)25%.
B)50%.
C)70%.
D)100%.
8

Which of the following statements is true regarding IQ?
A)Environmental impact on IQ increases with age.
B)The gene for a neural adhesion molecule may be associated with intelligence.
C)Very few chromosomal disorders affect intelligence.
D)None of the above are true.
9

Tolerance:
A)measures the severity of withdrawal symptoms when a person stops taking a drug.
B)is a characteristic of drug addiction.
C)is the need to take less of a drug to achieve the same results.
D)Is a measure of the toxicity of a drug.
10

There are no legal addictive drugs.
A)True
B)False
11

Alcoholism variants may be associated with the A1 allele of a ____ receptor gene.
A)apolipoprotein
B)dopamine
C)leptin
D)melanocortin-4
12

Endorphins
A)bind to receptors on human neurons.
B)are the human equivalent of opiates.
C)provide pain relief.
D)All of the above are true regarding endorphins.
13

Bipolar affective disorder
A)is associated with a single chromosomal site.
B)is more common than major depressive disorder.
C)Is likely caused by deficits of serotonin or norepinephrine.
D)All of the above are true regarding bipolar affective disorder.
14

A genetic contribution to schizophrenia is suggested by the
A)increased risk of recurrence.
B)high concordance between identical twins.
C)both a and b.
D)there is no evidence of a genetic influence.
15

Which of the following statements is true regarding schizophrenia?
A)Schizophrenia is related to low levels of serotonin or norepinephrine.
B)Chromosome 4 has been implicated in the occurrence of schizophrenia.
C)Environmental stresses may be related to schizophrenia.
D)None of these statements is true regarding schizophrenia.
16

Which of the following statements is true regarding behavioral traits and disorders?
A)Eating disorders have been associated with dopamine transporters.
B)Addiction may be related to myelin synthesis.
C)ADHD may be associated with the leptin receptor.
D)Intelligence may be related to serotonin synthesis.





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