When a lack of nutrients is detected by the stomach, the hormone ____ is released into the bloodstream and acts as a “start eating” signal when it reaches the brain.?
a. ?leptin
b. ?melatonin
c. ?estrogen
d. ?ghrelin
ANSWER:
d
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Pain avoidance is
a. episodic. b. cyclical. c. a stimulus motive. d. unaffected by attitudes or learning.
Carla works hard to get As on her report card because it is personally rewarding. Her behavior is being influenced by:
a. fixed action patterns c. extrinsic motivation b. intrinsic motivation d. drive-reduction theory
Which technique is dependent upon the release of oxygen from hemoglobin molecules?
A. PET B. rCBF C. MRI D. fMRI
What is the most current state of evidence to link childhood vaccines and autism spectrum disorder (ASD)?
A. There is no evidence to suggest that vaccines cause autism. B. Thimerosal (a childhood vaccine) is not related to autism, but a higher overall number of vaccines received by a child increases risk for developing autism. C. Vaccines do not cause autism, but they do speed up the development of symptoms. D. Certain vaccines have been found to directly induce autism.