All of the following protect the skin and mucous membranes from infection EXCEPT
A) multiple layers of cells.
B) tears.
C) saliva.
D) HCl.
E) the "ciliary escalator."
D
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Epstein-Barr virus may become latent in
A. red blood cells. B. T cells. C. nerve cells. D. B cells.
Animals that obtain their body heat from internal metabolism are called:
a. ectotherms. b. poikilotherms. c. endotherms. d. osmoconformers. e. osmoregulators.
A person you know has been in an automobile accident. After the accident, you notice a dramatic personality change
Before the accident, he was industrious and well liked; after the accident, he is profane, impetuous, and incapable of working toward a goal. Which portion of the brain was most likely damaged? A) occipital lobe B) temporal lobe C) frontal lobe D) parietal lobe
Adult stem cells are always unipotent.
Answer the following statement true (T) or false (F)