When specialized cells detect __________ levels of ____________, they trigger an increase in hunger
A) high; insulin
B) high; glucose
C) low; insulin
D) low; glucose
Answer: D
Rationale: Highly specialized neurons called glucostats can detect glucose levels in the fluid outside of the cell. When glucose levels drop, glucostats signal the hypothalamus that energy supplies are low, and hunger increases.
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A sample whose characteristics are the same as those of the population it is intended to reflect is called a ____ sample.
a) representative b) characteristic c) typical d) prototypical
What has been found concerning the empty nest syndrome in the research on the development of depression in parents?
a) Very few parents experience feelings of depression when their children left home. b) About half of parents reported feeling depressed when their children left home. c) A majority of the parents reported feeling depressed when their children left home. d) Men are more likely than women to experience sadness and depression when the children leave home.