Which of the following is true of motor neurons?
a. they have no direct contact with the outside world
b. they carry messages from the brain to muscles to produce behaviors
c. they remove wastes from the central nervous system
d. they carry information toward the spinal cord and brain
B
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At the level of ______, Perry states that college students realize that authorities may not know the right answers
Fill in the blank with correct word
During mitosis,
A) a single cell develops into a complex, many-celled human being. B) new body cells are created, each with its own unique DNA. C) the number of chromosomes normally present in body cells is halved. D) crossing over occurs.
In a longitudinal study of women from Mills College in the San Francisco bay area conducted by Helson and Wink (1992), it was found that high scorers on the femininity scale tend to:
A. choose not to have children. B. forget an acquaintance's birthday. C. take the initiative in sexual encounters. D. send cards to friends on holidays.
Rates of adolescent internet access in the United States __________.
A. are similar to rates in other developed countries B. far exceed rates in other developed counties C. are much lower than rates in other developed countries D. continue to decrease over time