A patient who has a high level of mast cell activity, dilation of blood vessels, and acute drop in blood pressure is likely suffering from _____
A) an autoimmune disease
B) a typical skin allergy (contact dermatitis) that can be treated by antihistamines
C) an organ transplant, such as a skin graft
D) the effect of exhaustion on the immune system
E) anaphylactic shock immediately following exposure to an allergen
Answer: E
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A laboratory technologist splashed a blood specimen onto his face, eyes, nose, and mouth. This specimen was from an HIV positive patient. If this blood exposure leads to HIV infection in the technologist, the transmission route is ________.
A. direct B. vehicle C. droplet nuclei D. fomite E. aerosol
The moose population on Isle Royale is an example of:
a. interspecific exploitation competition. b. intraspecific exploitation competition. c. interspecific contest competition. d. intraspecific contest competition. e. both intraspecific contest competition and scramble competition.
Which term most accurately describes the nutritional mode of healthy P. bursaria?
A) photoautotroph B) photoheterotroph C) chemoautotroph D) mixotroph
BOTH Ferroplasma and Thermoplasma are similar to the mycoplasmas in that they ALL
a. are thermotolerant. b. can oxidize iron. c. lack cell walls. d. withstand acidic conditions.