In the context of the fibers that extend from a neuron's cell body, the fiber that carries signals toward the neuron's cell body is called a(n)
A. neurotransmitter.
B. dendrite.
C. synapse.
D. axon.
Answer: B
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Research conducted by Hankey (2011) has found that factors such as hypertension, smoking, abdominal obesity, limited physical activity, and stress account for ____ of the risk of stroke
a. 40 percent b. 60 percent c. 75 percent d. 90 percent
Regarding both the WAIS-IV and the Stanford-Binet Intelligence Scales, 5th Edition (SB5), which of the following statements is FALSE?
a. Both provide performance (nonverbal) and verbal scores. b. Both can be used with adults. c. Both are group tests of intelligence. d. Both yield a single overall intelligence score.
Dopamine receptors in one part of the brain appear to become super-responsive to normal amounts of dopamine, which may account for which symptoms of schizophrenia?
a. positive symptoms of hallucinations and delusions b. negative symptoms of a flat affect and garbled speech c. excessive anxiety and conversion reactions d. amnesia and the multiple personalities
A survey conducted in 2008 found that 0.5 percent of American high school students identified themselves as gay or lesbian, while a survey in Holland found that 8.5 percent of students said that they were attracted to others of their same sex
Which of the following statements is the most likely explanation for this statistical difference? Holland's culture is much more liberal, so it promotes the development of same-sex relationships. Adolescents in the United States rarely see same-sex relationships so they don't know what they are. Open same-sex relationships are more culturally accepted in Holland than in the United States. The researchers conducting the surveys probably had a preconceived bias.