Which of the following would be a significant risk factor for the development of listeriosis?
A) Being a vegan
B) Consumption of meat, poultry, eggs, and dairy products
C) Receiving immunosuppressive drugs for treatment of an autoimmune disease
D) Consuming home-canned foods
C) Receiving immunosuppressive drugs for treatment of an autoimmune disease
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Anaphylactic shock ____
a. involves IgG antibodies rather than IgE antibodies b. can occur the first time an individual is exposed to an allergen c. involves the release of antihistamine from mast cells d. results from HIV infection e. is a life-threatening condition resulting from severe inflammation
A community consists of __________ species in a given area
a. one b. two c. three d. four e. all
After an accident, a professional musician cannot associate any of the instruments he has played with the sounds they make. What part of his brain is most likely damaged?
A) Auditory association areas B) Primary auditory areas C) Basal ganglia D) Sensory association areas E) Primary sensory areas
Using a mouse model, the investigator orally inoculates mice with a mutated strain of Brucella lacking the gene for production of urease. Indicate which of the following would LEAST support the hypothesis that urease plays a role as a virulence factor in establishing Brucella infection.
a. Mice infected with mutated Brucella will NOT demonstrate inhibition of phagosome acidification by ammonia. b. Mutant and nonmutant strains will demonstrate the ability to transition through intestinal mucosa. c. Counts of viable mutant strains from the upper gastrointestinal (GI) tract will be significantly less than those of nonmutant strains. d. Mice infected with nonmutated Brucella will demonstrate inhibition of phagosome acidification by ammonia.