The rate of oral cancer has risen steadily since 1973, and many health experts believe that this increase is related to the transmission of:
a..HIV.
b..HPV.
c..HSV-2.
d..HSV-1.
Ans: b..HPV.
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Which region of the U.S. has the most acidic rainfall?
a. Northwest b. Southeast c. Northeast d. Central e. Southwest
In a hypotonic solution, what happens to mammalian cells such as red blood cells?
a. shrink due to water loss b. stay the same size due to water moving in and out at the same rate c. swell due to water gain d. apoptosis
Cancer cells
a. have altered plasma membranes. b. have a lessened ability to attach to other cells. c. divide to produce high densities of cells. d. show an amplified reliance on glycolysis. e. exhibit all of these.
Most people afflicted with recessive disorders are born to parents who were
A) both affected by the disease. B) not affected at all by the disease. C) slightly affected by the disease, showing some but not all of the symptoms. D) subjected to some environmental toxin that caused the disease in their children.