The immune system develops __________ through exposure to __________.
A. interferon; antibodies
B. antigens; antibodies
C. antibodies; B-lymphocytes
D. antibodies; antigens
Answer: D
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Ruffini's endings are ____
a. elaborate neuron endings for touch b. simple, bare neuron endings c. bare endings surrounded by non-neural cells d. important components of the blood
The entire community was responsible for upholding morality according to the ____
a. Enlightenment ideology b. Puritan ideology c. Renaissance ideology d. Protestant ideology
About _____ of American adolescents eat too much unhealthy saturated fat
A) 25% B) 40% C) two-thirds D) 90%
Single-case experiments are desirable when a researcher
a. wants to assess therapeutic or intervention techniques. b. the behaviors being studied are common to many people. c. does not want to gather extensive information about a person or a phenomenon. d. believes that there is a strong possibility that the results will be influenced by cohort effects.