Which of the following increases the maternal mortality rate in the United States?
A. large urban populations
B. large rural populations
C. large immigrant populations
D. large older populations
Answer: B
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Single mothers with a comfortable income who are in their 30s form a growing group in the United States. Children raised by such a single mother generally do not have behavior problems unless
a. mothers provide too many educational and recreational opportunities to the child. b. the child has a difficult temperament. c. stress levels are high and social support low. d. mothers were previously married and now divorced.
Currently, the most prominent theory of human attachment stems from the work of __________.
A. John Bowlby B. Harry Harlow C. Sigmund Freud D. Erik Erikson
Parental investment theory refers to the observation that . . .
a. The sex that invests more time and energy into raising the young chooses who to mate with b. The sex that invests less time and energy in raising the young competes c. Both of the above d. Neither of the above
Which of the following is the order of events that prompts release of neurotransmitters into the synapse?
A. An action potential reaches the axon terminals, vesicles fuse with cell membrane, calcium ions enter the terminals, vesicles fuse with cell membrane, neurotransmitter is released. B. Calcium ions enter the terminals, an action potential reaches the axon terminals, vesicles fuse with cell membrane, neurotransmitter is released. C. Vesicles fuse with cell membrane, an action potential reaches the axon terminals, calcium ions enter the terminals, neurotransmitter is released. D. An action potential reaches the axon terminals, calcium ions enter the terminals, vesicles fuse with cell membrane, neurotransmitter is released.