The ob/ob mouse is obese because it eats uncontrollably. By studying ob/ob mice, scientists discovered _____, a satiety signal that ob/ob mice cannot make because of a genetic mutation.
A. ghrelin
B. leptin
C. the soluble leptin receptor
D. the db gene product
Question 2
Physical activity is defined as any bodily movement that results in energy expenditure. According to this definition, _____ would be considered physical activity.
A. basal metabolism
B. thermic effect of food
C. nonexercise activity thermogenesis
D. adaptive thermogenesis