How many openings (inputs and outputs) are there in the urinary bladder?
A. four
B. three
C. five
D. two
E. one
Answer: B
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Which of these items associated with DNA packaging is the thickest?
a. a DNA double helix b. a solenoid c. a nucleosome d. an H2A histone protein e. an H1 histone protein
When doing SSU (small subunit ribosomal RNA) of a mixed population of microbes from an environmental sample, specific ________ are identified.
A. genotypes B. phylotypes C. phenotypes D. unknown microbes
Which statement is an accurate interpretation of the outcome in an ecosystem when a major predator is removed?
A. The diversity of the ecosystem decreases because new herbivores move in. B. The diversity of the ecosystem decreases because parasites become more of a problem. C. The diversity of the ecosystem actually increases. D. The diversity of the ecosystem decreases since there is an increase in competition. E. The remaining community adjusts and quickly becomes stable.
In which type of response are Toll-Like Receptors (TLR's) important to pathogens?
A) innate response B) complement response C) protective immunity D) adaptive immunity E) barrier to infection