Which part of the brain produces the neurotransmitter dopamine?
A. pons
B. occipital lobe
C. substantia nigra
D. thalamus
E. hypothalamus
Answer: C
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There is some limited evidence that which of the following may be a factor contributing to adolescent acne?
A. vitamin A deficiency B. a diet high in fried and other fatty foods C. a high glycemic-load diet D. alcohol abuse
Riboflavin is most easily destroyed when exposed to
a. heat. b. acid. c. alkali. d. ultraviolet light.
Which factor appears to enhance well-being and longevity?
a. depression b. loneliness c. pessimism d. isolation e. a sense of humor
Bacterial overgrowth in the stomach and small intestine can result in _____
a. deficiencies of fat-soluble vitamins b. weight gain c. vitamin B6 deficiency d. abnormal glucose tolerance e. aplastic anemia