Many axons, especially the larger ones, are insulated by a surrounding layer of fatty material called the _______________
a. neuromodulator.
b. myelin sheath.
c. dendrite.
d. glia.
Answer: b
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Suppose that researchers discover the gene responsible for manic behavior. Assume that the alleles of the gene are represented by M and m and the gene is dominant/recessive. Which of the following represents the phenotype?
a. manic behavior b. the M allele c. the m allele d. the combination of the M and m alleles
As children acquire representational skills, they gain the ability to
a. make their wishes come true. b. compare their performance to the performance of others. c. communicate about the past and create imagined experiences. d. move more freely in the environment.
The best analogy for the attachment an infant has for a mother or primary caregiver is
a. an invisible thread. c. a leash. b. an umbilical cord. d. a safety net.
Irritable or aggressive behavior, reckless or self-destructive behavior, difficulty falling or staying asleep, and hyper vigilance are all symptoms associated with the DSM-5's ___________ category of PTSD
a) intrusively re-experiencing the traumatic event b) avoidance of stimuli associated with the event c) mood and cognitive changes following the trauma d) symptoms of increased arousal and reactivity