Which of the following neurotransmitter systems is NOT among those mentioned in the textbook as being affected by alcohol consumption?
a. serotonin
b. endorphins
c. dopamine
d. acetylcholine
Ans: D
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A. sports children participate in B. environment in which children grew up C. school children attend D. television children watch
Many animals are either diurnal (active during daylight) or nocturnal (active during night). What do the abilities of rods and cones to respond to different lighting conditions tell us about the niche of human beings relative to night and day?
What will be an ideal response?
When the ovum and sperm cells unite and fertilization occurs, what is formed?
A. a fetus B. an embryo C. a blastocyst D. a zygote
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A. formal operational stage B. preoperational stage C. concrete operational stage D. sensorimotor stage