It is estimated that as much as ________ of the cycling nitrogen in the oceans is contributed by anammox bacteria.
A. 25%
B. 40%
C. 10%
D. 70%
Answer: D
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A visible red streak in an infected hand or foot is referred to as
A. septicemia. B. bacteremia. C. lymphangitis. D. edema.
Plants that have their flowering inhibited by being exposed to bright lights at night are
a) short-day plants. b) long-day plants. c) short-night plants. d) day-neutral plants. e) devoid of phytochrome.
Which of the following is an example of a dye used in a simple stain?
a. Methylene blue b. Carbolfuchsin c. Nigrosin d. Eosin
Which of the following statements regarding tabun is correct?
A) The primary route of exposure to tabun is through the skin. B) Tabun has a fruity smell and an appearance similar to sarin. C) Tabun is twice as lethal as sarin and 50 times less persistent. D) The components used to manufacture tabun are hard to acquire.