To date, the preferred weapons of mass destruction for terrorists have been:
A) nuclear.
B) chemical.
C) explosive.
D) biologic.
Ans: C) explosive.
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Purple sulfur bacteria and filamentous sulfur-oxidizers both
A. accumulate sulfur as intracellular granules. B. fix nitrogen. C. produce oxygen from carbon dioxide. D. use gliding motility.
The most anterior of the lobes of the human cerebrum is the _________ lobe.
Fill in the blank(s) with the appropriate word(s)
If an adult human suffered a traumatic injury, could their notochord be damaged?
A. No; the notochord is encased in bone and it not susceptible to damage. B. Yes; because the notochord is deep within the body only a severe injury could damage it. C. Yes; damage to the notochord often results in paralysis. D. No; adult humans do not have a notochord.
The simplest nerve pathway is
a. located in the midbrain. b. the reflex pathway. c. found in the lower part of the brain. d. found in the autonomic nervous system. e. in the flow of information from a sense receptor to the brain.