Changes in the physical appearance of adolescents, such as growth of facial hair in boys and breast development in girls, are called
a. primary sexual characteristics. c. differentiations.
b. secondary sexual characteristics. d. puberty.
B
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Which of the following can develop through the process of respondent conditioning?
a. generalization b. discrimination c. A and B d. none of these
Relative to neurons using other neurochemicals, serotonergic neurons
A. are quite numerous. B. are surprisingly few in number. C. project to very limited parts of the brain. D. do not have different receptor subtypes.
preoperational stage involves...
What will be an ideal response?
Second messengers can
A) be synthesized in response to activation of metabotropic receptors. B) influence metabolic activities of the cell. C) induce IPSPs or EPSPs. D) bind to DNA to influence protein synthesis. E) all of the above