The most likely identification of a bile-resistant, kanamycin-resistant, colistin-resistant, and vancomycin-resistant anaerobic gram-negative bacilli is:
a. nonpigmented Prevotella.
b. Porphyromonas spp.
c. B. fragilis group.
d. Fusobacterium spp.
C
The characteristics listed can be used to describe the B. fragilis group.
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What is the result of successful communication between rhizobia and their plant hosts?
A. Rhizobia consume the plant tissue as an energy and carbon source, causing disease in the plant. B. The plant supplies organic forms of nitrogen to the rhizobia. C. The plant consumes rhizobiaas an energy source and carbon, destroying the invading bacteria. D. The rhizobia invade the plant root and begin to fix nitrogen with the assistance of the plant.
At what size of prey population does the rate of predator population growth reach zero?
a. 250 b. 300 c. 350 d. 400
Marta has been having terrible headaches. Now her hand feels like it is being gripped even though it is not actually being touched. She's also having a hard time interpreting sensations
For example, she blistered her hand on a hot pan because she interpreted the heat sensation as cold. Which portion of Marta's brain is most likely damaged? A) Temporal lobe B) Hippocampus C) Parietal lobe D) Frontal lobe E) Hypothalamus
Which of the following statements about type IV reactions is FALSE?
A) Reactions are primarily due to T cell proliferation. B) Reactions are not apparent for a day or more. C) Cytokines initiate tissue damage. D) Allergic contact dermatitis is an example. E) Hemolytic disease of the newborn is an example.