Occasional brief periods of stress ____
a. are harmful to an organism
b. are harmful if the emotion is anger
c. boost the activity of the immune system
d. direct energy away from the synthesis of proteins
c
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Which inherited blood-clotting disorder has been a problem throughout the royal families of Europe?
A. X-linked arrhythmia B. phenylketonuria (PKU) C. Down syndrome D. hemophilia
Researchers who followed a large, representative sample of U.S. youths from ages 9 to 17 found that
A)daily free-time physical activity declined with age, more so for girls than boys. B)at every age, a majority of participants engaged in regular exercise outside of school hours. C)daily free-time physical activity increased for both sexes until age 13, then declined. D)throughout adolescence, girls exceeded boys in regular daily exercise.
Most people become grandparents in their forties and fifties
a. True b. False Indicate whether the statement is true or false
Which of the following is NOT a symptom of seasonal affective disorder?
a. feeling irritable and anxious b. tendency to overeat c. decreased need for sleep d. socially withdrawn