The function of the embryo's "guiding cells" is to
a. launch the secular trend.
b. organize neurons into structures of the brain.
c. settle disputes among rival groups of neurons.
d. ensure that skeletal aging occurs at an optimal rate.
B
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A reward that consists of taking away something unpleasant is called
a. positive reinforcement. c. extinction. b. negative reinforcement. d. punishment.
______ was introduced in the United States around the time of the Civil War and was used
to deaden pain from wounds. a. Morphine c. Opium b. Heroin d. Codeine
With regard to the gender dysphoria, critics of the present diagnostic system contend that much of the distress that transgender children experience comes from difficulties getting along with other kids and being accepted by them
Not from their gender identity per se. Indicate whether the statement is true or false
Fluoxetine (Prozac) is an effective treatment for __________ that works by __________.
A. schizophrenia; blocking dopamine receptors B. depression and obsessive-compulsive disorder; blocking serotonin reuptake C. anxiety disorders; inhibition of MAO D. delusions and hallucinations; blocking serotonin reuptake