Adaptive immunity has a response time of ____
a. immediate response
b. 1-2 days
c. 7-10 days
d. 2 weeks
e. one month
ANSWER: c
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When a mixture of debris from killed virulent bacteria and living non-virulent bacteria are injected into mice:
A. the mice are killed because the virulent bacteria are revived. B. the mice survive because none of the living bacteria are virulent. C. the mice survive for a period of a few weeks and then die from an unrelated illness. D. half the mice are killed and the other half survive. E. the mice are killed because the non- virulent bacteria are transformed into virulent bacteria.
Parasites represent an unusual type of predation in that the parasite typically ________
a. does not kill its host (prey) outright b. completes its life cycle within the host c. is significantly smaller than the organism it preys upon d. all of the choices
Which of the following neurotransmitters is mismatched?
a. acetylcholine : muscle contraction b. endorphins : pain relief c. norepinephrine : response to stress d. serotonin : sexual function e. dopamine : reward -based learning
Which one of the following is an occasional severe complication of chickenpox?
a) Reye's syndrome b) Toxic shock syndrome c) Scalded skin syndrome d) Herpes encephalitis