What is an advantage of using the lac regulatory region to control the expression of exogenous proteins in bacterial cells?
A) Expression can be controlled by the addition of an inducer to the media.
B) This regulatory region functions in both bacterial and mammalian cells.
C) By using this regulatory region, eukaryotic genomic DNA can be expressed in bacterial cells.
D) Host regulatory mechanisms are not effective when this regulatory region is cloned into a plasmid.
A) Expression can be controlled by the addition of an inducer to the media.
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A person is MOST likely to contract diseases such as Rocky Mountain spotted fever and ehrlichiosis if he or she visits/participates in
A) camping and hiking in the backcountry. B) metropolitan cities. C) snow skiing. D) European countries.
Which cell is NOT involved with the defense response?
a. erythrocytes b. neutrophils c. lymphocytes d. eosinophils e. monocytes
Above 41o C, ____
a. enzymes denature b. heart rate decreases c. enzyme activity increases by 50% d. hypothermia sets in e. non-shivering heat production occurs
Which of the following genera contains spherical-shaped bacteria?
a. Escherichia b. Bacillus c. Micrococcus d. Borrelia e. Treponema