Which body system is least likely to be damaged by exposure to mercury?
a. Liver
b. Skin
c. Kidneys
d. Brain
e. Nervous system
b
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Which of the following molecules inhibits bacterial transcription by prevention of promoter clearance?
A. ?-amanitin B. actinomycin D C. rifampicin D. acridine E. ethidium bromide
Which of the following would be most appropriate for removal of bacteria and viruses from a liquid?
A. Membrane filter (0.01µm) B. Depth filter (diatomaceous earth) C. N95 filter D. HEPA filter
Within eukaryotic genes are sections of information called ________ that will be removed from the RNA strand prior to it leaving the nucleus
a. introns and exons b. introns c. promoter sequences d. exons e. RNA polymerases
Without the greenhouse effect, the Earth would
A) be much warmer than it currently is. B) be much colder than it currently is. C) have uniform temperatures and would lack seasons. D) have constant sunlight.