The E test is ________.
A. a rapid serological test used to detect the presence of eastern equine encephalitis virus in cerebrospinal fluid
B. used to quantify levels of IgE antibody in serum samples
C. a quantitative antibiotic sensitivity test that utilizes plastic strips impregnated with an antibiotic of interest
D. used to measure esculine levels in pasteurized milk
Answer: C
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When nitrate is reduced to dinitrogen gas (N2), nitrogen is removed from the ecosystem and returned to the atmosphere through a series of reactions collectively known as ________.
A. denitrification B. nitrogen fixation C. anammox reaction D. All of the choices are correct.
When we compare animal development to plant development, we find that _____
A) plant cells, but not animal cells, migrate during morphogenesis B) animal cells, but not plant cells, migrate during morphogenesis C) plant cells and animal cells migrate extensively during morphogenesis D) neither plant cells nor animal cells migrate during morphogenesis
Answer the following questions in reference to the five divisions of vascular plants listed below.
A. The giant club mosses of the Carboniferous period were members of this group. B. In members of this group the gametophyte is the dominant generation. C. Orchids are members of this division. D. Members of this group are heterosporous with well-developed seed and pollen-bearing cones. E. Members of this group include kidney beans, apples, and almonds.
Two species of warblers colonize the same island habitat. Both species nest in similar locations and eat the same type of prey. Eventually, competition will probably cause one species to
A. migrate. B. speciate. C. grow exponentially. D. be eliminated.