A disease that caused astrocytes to degenerate would likely:
a. allow pathogens normally blocked by the blood-brain barrier to enter the brain.
b. increase the activity of active transport mechanisms.
c. cause blood vessels to dilate, increasing cerebral blood flow.
d. cause endothelial cells to fit more tightly together.
Ans: A
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An organized and relatively consistent set of assumptions that a person has about himself/herself is called a(n)
a. personality. b. personality trait. c. self-concept. d. personality type.
The case of Little Brenda, who was born a biological male but raised as a girl, illustrates that ____
a. virtually all human behavior is determined by nature rather than culture b. gender identity is almost completely based on upbringing rather than biology c. socialization is a powerful force, but there are limits to how much it can influence people d. as people age, nature becomes increasingly less important and nurture becomes increasingly more important
Calculate the median of this set of numbers:
13, 19, 27, 12, 29, 18, 55 a. 12 b. 19 c. 24.7 d. 29 e. 44
________ occurs when dogs that possess a desired characteristic are identified and mated only with other dogs that also possess the characteristic.
A. A shared environment B. Genotype-environment correlation C. The equal environments assumption D. Selective breeding