The theory in which aging is attributed to our bodies' organs and cell tissues simply wearing out with repeated use and abuse is called_________ theory
a) activity
b) wear-and-tear
c) disengagement
d) cellular clock
ANS: B
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What serve as chemical messengers and assist the communication between immune cells?
A. Macrophages B. Cytokines C. Neurons D. B-cells
Parental bickering or severe fighting in front of the children is linked in research studies to
a. no behavior problems in children. b. the same kinds of problems that children experience when their parents get separated or divorced. c. behavior problems in girls, but not in boys. d. a decrease in child biological "alarm reactions.".
In job analysis, KSAO stands for ____________________________
FIll in the blank with correct word.
Buss' cross-cultural research showed that on average, males are about __________ years
older than females on their wedding day. a. 2 b. 3 c. 5 d. 7 e. 10