Based on the tree shown, which of the following groupings is considered monophyletic?
A. Species A, Species B, Species C, and
Species D
B. Species A, Species B, Species E, and
Species F
C. Species E and Species F
D. Species C, Species D, and Species E
E. Species C, Species D, Species E, and
Species F
A
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The significance of the Hershey and Chase
experiments in which 32P and 35S were used is that a. DNA labeled with 35S and proteins labeled with 32P can be traced in the course of an experiment. b. they demonstrated that DNA labeled with 32P is transferred from the bacteriophage to the virus. c. they established that proteins labeled with 35S become deactivated and unable to be transferred. d. they demonstrated that bacteriophages transfer their DNA, not their protein coats, into their hosts. e. DNA may be the hereditary material; although, bacteriophages transfer both DNA and proteins into their hosts
The ratio of a medication's dose that can be tolerated to its effective dose is the therapeutic (MIC/index/range) of the medication
What will be an ideal response?
Which of the following statements regarding the association of hepatitis B with liver cancer is FALSE?
A) Geographic areas with a high incidence of liver cancer also have a high prevalence of hepatitis B. B) The HBV genome has been found integrated into hepatic cancer cells. C) Hepatic cancer cells typically express HBV antigen. D) Chronic carriers of the virus are 200 times more likely to develop hepatic cancer. E) Vaccination does not provide protection against the development of hepatic cancer.
Which is mismatched?
A. Epidemic typhus - body louse feces B. Murine typhus - flea feces C. Rickettsial pox - mite bite D. Rocky Mountain spotted fever - tick bite E. Human ehrlichiosis - flea bite