The most threatening infectious disease of the upper respiratory tract is
a) epiglottitis.
b) pharyngitis.
c) laryngitis.
d) sinusitis.
Ans: a) epiglottitis.
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The production of large quantities of a particular DNA sequence is known as gene ________.
Fill in the blank(s) with the appropriate word(s).
Plants that carry out the Calvin cycle during the day when the stomata are closed and fix carbon dioxide into organic acids at night when the stomata are open are called:
a) green algae. b) C3 plants. c) C6 plants. d) CAM plants. e) chemoautotrophs.
Organisms introduced as biocontrols for an invasive species can harm native species
Indicate whether the statement is true or false
The resistance of Pseudomonas to a wide variety of antimicrobial drugs is due, in part, to its
A) production of exoenzymes. B) production of pyocyanin. C) ability to utilize a wide range of carbon and nitrogen sources. D) ability to grow in almost any moist environment. E) ability to pump drugs out of the cell.