The chemolithotrophs that metabolize reduced sulfur compounds using oxygen as a terminal electron acceptor in the Winogradsky column include ________.
A. Beggiatoa
B. cyanobacteria
C. Chromatium
D. Desulfovibrio
Answer: A
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A) central nervous system B) digestive system C) kidneys D) lungs
Contact lens cleaners commonly use which type of chemical agent to control microbial growth?
A) alkylating agents B) peroxygen C) quats D) supercritical fluid
What enzyme is used to synthesize daughter strands of DNA during PCR?
A) replicase B) DNA polymerase C) RNA polymerase D) Taq polymerase
How was the mechanism of sympatric speciation among hemp nettles in nature verified experimentally?
a. By simply creating unique hybrids under laboratory conditions b. By producing hybrids that were 98% fertile under laboratory conditions c. By producing experimental hybrids that could reproduce successfully with both parent species d. By producing experimental hybrids that formed fertile offspring with the naturally occurring hybrid e. By creating hybrids that reproduced through the F4 generation before dying from hybrid inviability