Dr. John Doe, a research microbiologist for a university medical center, has been accused of sending Bacillus anthracis, the causative agent of anthrax, through the mail to the President. You, as a public health official with the CDC, have to determine if it is the same strain as the two strains of B. anthracis found cultured in his lab. Which method of identification would you use to compare these three bacterial samples?
A. Pulse-field gel electrophoresis
B. Biochemical test identification
C. Serological testing using agglutination
D. Gram staining
Answer: A
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Which of these is something that RNA polymerase can do that DNA polymerase cannot?
A. Synthesize a strand in the 5' to 3' direction. B. Initiate strand synthesis. C. Incorporate deoxynucleotides into a growing nucleic acid polymer. D. Synthesize a strand complementary to a template strand.
The total number of deaths in a population due to a disease is the ________ rate.
Fill in the blank(s) with the appropriate word(s).
Taste cells and the carotid bodies are alike in that both
A. respond to changes in pH. B. are chemoreceptors. C. utilize pressure to activate sensory receptors. D. are found in the mouth. E. respond to distant stimuli.
How does a fermenter generate proton motive force (PMF) to drive active transport?
A. Fermenters cannot generate proton motive force. B. Fermenters use an electron transport chain for this purpose. C. Fermenters can reverse the direction of the ATP synthase to generate PMF.