The propagation of animals and plants outside their natural habitat is called
A. captive breeding.
B. bioremediation.
C. cloning.
D. rehabilitation.
E. phytoremediation.
A. captive breeding.
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Answer the following statements true (T) or false (F)
1. Zooplankton are heterotrophs. 2. Biomass is always highest at the lower trophic levels. 3. Most of the Earth's phosphorus is trapped in sedimentary rocks. 4. Assimilation is the process by which inorganic substances are incorporated into organic molecules.
Axons bundled in connective tissue are called
a. neural nets. b. ganglia. c. nerves. d. neuroglia. e. none of these
Which of the following statements regarding coliform bacteria is correct?
A. Coliforms derive from the intestinal tract and therefore indicate fecal contamination. B. Petri dishes used to enumerate coliforms are best incubated at 45-48°C. C. The presence of Klebsiella is a strong indicator of fecal contamination. D. Coliforms from the human and bovine GI tracts differ, so identifying the specific microbe will indicate the source of contamination.
You recently identified a novel protein that contains several membrane-spanning domains. You would predict that the amino acids embedded in the membrane would have ________ side groups.
A. polar uncharged B. positively charged C. nonpolar D. negatively charged