Where does settling of solids occur at a wastewater treatment facility?
A- injection well
B- bar screen
C- aquifer
D- aeration basin
E- clarifier
E- Clarifier
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A cDNA library differs from a genomic DNA library in which way?
A. It consists solely of RNA molecules B. It contains many copies of the gene of interest C. It contains only coding sequences, not introns D. It is typically 10-100 times the size of a DNA library
Staphylococcus epidermidis can be characterized by all of the following except that it
A. can be associated with nosocomial infections. B. produces a yellow pigment. C. is not pigmented. D. does not produce coagulase.
The idea that river mud left in the sun will turn into frogs illustrates
A) prebiotic evolution. B) spontaneous generation. C) the endosymbiont theory. D) how prokaryotes evolve. E) self-replication.
The presence of active motile multi-flagellated trophozoites in vaginal or urethral secretion is indicative of infection with
A. Trichomonas vaginalis. B. Chlamydia trachomatis. C. Giardia intestinalis. D. Acanthamoeba. E. Balantidium coli.