The army of highly specialized cells and organs that works to identify and search out foreign invaders such as fungi, viruses, parasites, and bacteria is called the __________
a) immune system.
b) endocrine system.
c) sympathetic nervous system.
d) respiratory system.
a
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Side effects of tricyclic antidepressants include a. weight loss
b. excessive urination. c. sexual dysfunction. d. insomnia.
Infants can imitate actions one day after seeing them as early as age
a. 20 days. b. eight weeks. c. six months. d. nine months.
Which statement most accurately describes the progression of peer group structures through adolescence?
A) Same-sex cliques combine into crowds that evolve into heterosexual cliques and associations of couples. B) Crowds dissolve into cliques that reorganize into heterosexual pairs. C) Reputation-based groups become identity prototypes that will become either cliques or crowds. D) Peers separate from cliques to form broader groups based on interests.
All of the following behaviors are likely to be in place by the age of 4 months of age EXCEPT:
a. smiling b. the visually guided reach c. the ability to visually focus on an object in the field of vision d. the ability to discriminate between the mother's face and a stranger's face