In lakes, the open-water surface layer is called the ____
a. benthic zone
b. abyssal zone
c. limnetic zone
d. littoral zone
e. profundal zone
ANSWER: c
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Which of the following locations is the main reservoir for nitrogen in the nitrogen cycle?
A) atmosphere B) sedimentary bedrock C) fossilized plant and animal remains (coal, oil, and natural gas) D) plant and animal biomass E) soil
Chronic alcoholics often develop Wernicke-Korsakoff syndrome, which is characterized by a number of different
neurological symptoms, including ataxia (an abnormal gait). Which specific brain region is most likely responsible for this symptom?
a. Wernicke's area b. cerebellum c. prefrontal association cortex d. amygdala e. brain stem
Deserts caused by global patterns of air
circulation are dry because
a. as the moist air above deserts rise, all of the water evaporates b. dry, descending air above deserts draws moisture from the soil c. the moist air above deserts is absorbed by the sandy desert soils d. because of the warm temperatures, all the moisture in the deserts is drawn away and is transported by air currents to the tropics e. all of the air currents above deserts have no contact with bodies of water
A nonreciprocal crossover causes which of the following products?
A) deletion only B) duplication only C) nondisjunction D) deletion and duplication