A cloning vector often used to introduce a foreign gene into a bacterium is a(n) ________
a. DNA chip
b. plasmid
c. operon
d. transgenic organism
b
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If you are interested in observing a relatively simple community structure in a clear water lake, you would do well to choose diving into _____
A) an oligotrophic lake B) a eutrophic lake C) a relatively shallow lake D) a nutrient-rich lake E) a lake with consistently warm temperatures
The microbiome represents all the genes present in the trillions of microbes living on and in adult humans.
Answer the following statement true (T) or false (F)
Which of the following is not a virulence factor of Bordetella pertussis?
A. M protein B. Tracheal cytotoxin C. Pertussis toxin D. Filamentous hemagglutinin E. Endotoxin
The exact elevation at which the treeline occurs depends on the __________ and __________
a. temperature; distance from the sun b. altitude; distance from the sun c. elevation; annual precipitation d. latitude; distance from the ocean e. longitude; distance from the equator