Which of the following properties facilitates use of Bacillus anthracis as a bioterror agent?
A. capsule
B. edema toxin
C. lethal toxin
D. spores
E. thick peptide glycan
Ans: D. spores
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What happens to air as it is cooled?
a. It rises. b. It sinks. c. It moves horizontally. d. It moves at a faster speed. e. It does none of these
At the bottom or base of an energy pyramid are the ____
a. primary consumers b. primary producers c. secondary consumers d. secondary producers e. tertiary consumers
What defines a geological time period known as an era?
A) Location of the continents B) The distinct life forms that were present C) Average global temperature D) The eras represent equal divisions of time
Which of the following is NOT an example of a walled-off site of infection that contains a fluid made of dead and dying tissue cells, leukocytes, and pathogens?
A) a boil B) an abscess C) a pimple D) a pustule E) a tumor