The demographic most at risk from respiratory syncytial virus are
A) the elderly.
B) smokers.
C) young children.
D) immunocompromised individuals.
E) pet owners.
Answer: C
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Which of the following is not a characteristic of life?
A. The ability to reproduce B. The ability to grow and develop C. The ability to respond to the environment D. The ability to move
The fetus is not rejected because
A. it is too small. B. it is in an immunologically privileged site. C. the father is immunosuppressed. D. it has no antigens. E. it is in an immunologically privileged site AND the father is immunosuppressed.
Competence means that a plant is _________, while determination means that a plant tissue __________. The acquisition of flowering competence is an example of a __________.
A. capable of responding to signals that trigger a fate change; remains capable of adopting more than one possible developmental fate; phaseolus B. unresponsive to signals that trigger a fate change; is committed to a specific developmental fate; fate change C. in the process of responding to signals that trigger a fate change; was driven to adopt an abnormal developmental fate by transgene expression; flowerization D. capable of responding to signals that trigger a fate change; is committed to a specific developmental fate; phase change
The idea that geologic processes have formed
the earth's surface by repeating the same actions over and over is known as a. the theory of catastrophism. b. plate tectonics. c. continental drift. d. the theory of uniformity. e. the theory of relativity