Legionella pneumophila may be found in
A. shower stalls.
B. soil and aquatic ecosystems.
C. air-conditioning systems.
D. All of the choices are correct.
Answer: D
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Protein synthesis inhibitors have a low therapeutic index because they usually cannot discriminate between prokaryotic and eukaryotic ribosomes.
Answer the following statement true (T) or false (F)
Most of the following events are characteristic of a La Niña weather pattern. Select the exception
a. low pressure over the western Pacific b. air and ocean surface waters moving west to east c. low ocean surface temperatures off the coast of South America d. cold, wet weather in the northeast U.S. e. wet weather on the west coast of the U.S.
Junctions between adjacent epithelial cells that allow for some movement between cells so that tissues can stretch and bend are called gap junctions.
a. true b. false
When an atom's outer electron shell is filled, the atom is ____
a. unstable b. positively charged c. polarized d. most stable e. isotope