Hyponatremia is a condition characterized by low sodium in the blood. This is a concern for marathon runners who drink too much water, and can cause life-threatening pressure on the brain. Why would this occur?
A. Neurons would take up the sodium from the blood and not be able to polarize.
B. Neurons would be stimulated to all fire at once.
C. Neurons would swell by osmosis.
D. Neurons die in low levels of sodium.
E. Neurons cannot give the kidneys signals to reabsorb sodium ions.
C. Neurons would swell by osmosis.
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Hot sulfur-rich environments associated with terrestrial sulfur-rich springs are called
A) acid-mine drainage. B) hydrothermal vents. C) solfataras. D) terrestrial volcanoes.
Which of the following organisms would NOT be classified in the Domain Eukarya?
A. Canis lupis (wolf). B. Loxodonta cyclotis (forest elephant). C. Salmonella enterica (bacteria that causes food poisoning). D. Aleuria aurantia (ascomycete fungi). E. Sequoiadendron giganteum (Giant Sequoia tree).
A mutation caused by a piece of DNA breaking away from its chromosome and becoming attached to a non-homologous chromosome is called
A.) deletion. B.) duplication. C.) inversion. D.) translocation.
What could be said of our sense of taste?
a) How we define what tastes good or bad is fundamentally a learned behavior. b) There is no accounting for taste in evolution. c) Individuals have widely different tastes that contributes to the variety of our species. d) Taste is a matter of arbitrary preference. e) What tastes good to us is dictated by our nutritional needs.