Which of the following refers to a measure of immunity usually used as a dependent variable?
A. How effectively certain monocytes function either in a test tube or in a living person
B. The numbers of certain erythrocytes present in blood
C. The toxicity of tumor-fighting cells
D. The quantities of chemicals that regulate neutrophils
Answer: C
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Infant mortality in modern societies is usually
a. less than 5 deaths per 1,000 births. c. about 5%. b. about 43.5 deaths per 1,000 births. d. about 10 %.
Which of the following is NOT a major neurotransmitter found in the human brain?
A. Parathyroid B. Dopamine C. Serotonin D. Glutamate
Primary sex characteristics are to __________ as secondary sex characteristics are to __________.
A. activational effects; masculinization effects B. organizational effects; activational effects C. activational effects; organizational effects D. organizational effects; defeminization effects
What type of thinking allows many different solutions to a problem?
a) divergent thinking b) convergent thinking c) creativity d) brainstorming