Collectively, reactions that break down molecules are known as
A) anabolism.
B) metabolism.
C) synthesis reactions.
D) exchange reactions.
E) catabolism.
E
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Which is not an action of interferon?
A. It stimulates macrophages and NK cells to destroy virus-infected cells. B. It triggers synthesis of enzymes that destroy viral nucleic acids. C. It signals the immune system that the secreting cell is part of the body and so should not be attacked. D. It binds to receptors of neighboring cells preventing them from being infected.
Pain impulses are first processed in the
A. gray matter of the posterior horn. B. motor cortex of the cerebrum. C. cerebral cortex. D. dorsal root ganglion.
What property of water helps keep body temperature stabilized?
A) surface tension B) universal solvent C) heat capacity D) polarity
Which of the following does the hypothalamus not help control?
A. Hunger B. Speech C. Blood pressure D. Sex drive E. Sleepiness