Which type of leukocyte destroys tumor cells and cells infected with viruses?
a. T cells
b. B cells
c. Schwann cells
d. natural killer cells
d
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Prior to beginning any study, Professor Cleutter's research team carefully explains the research to potential participants, answers questions, and helps them to determine if the study is right for them. Professor Cleutter and his team are showing respect for participants' ______.
A. integrity B. autonomy C. beneficence D. justice
If an individual shows unusual emotional lability, he or she . . .
a. Never changes his or her emotional state b. Changes emotional states abruptly and unpredictably c. Both of the above d. Neither of the above
The brainstem consists mainly of the
a. cerebellum and the cerebral cortex. b. cerebrum and the medulla. c. medulla and the cerebellum. d. cerebral cortex and the medulla.
According to the place theory of hearing, low tones cause the greatest movement near the outer tip of the cochlea
Indicate whether the statement is true or false