The bulk of a plant is made from ________
A) minerals from the soil obtained by the roots of a plant
B) sugars from the soil obtained by the roots of a plant
C) the sugars made in photosynthesis, which were made from carbon dioxide
D) oxygen absorbed by the pores in leaves
C
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Detritivores _____
A) recycle chemical elements directly back to primary consumers B) synthesize organic molecules that are used by primary producers C) convert organic materials from all trophic levels to inorganic compounds usable by primary producers D) secrete enzymes that convert the organic molecules of detritus into carbon dioxide and water E) may be autotrophic or heterotrophic
The moraines left when glaciers retreat are characterized by
A. year-round ice. B. low nitrogen content and little organic matter. C. rich, fertile soil. D. high levels of nitrogen, phosphate and carbon.
Four of the five controls listed below occur in
eukaryotes. Select the exception. a. replicational control b. transcriptional control c. translational control d. post-translational control e. transcript processing control
The five groups of archaea are:
a. Psychrophilic, carcinogenic, halophilic, high- and low-pH tolerant, and high-pressure tolerant b. Anaerobic, aerobic, thermophilic, high- and low-pH tolerant, and methanogenic c. thermophilic, halophilic, high- and low-pH tolerant, high-pressure tolerant, and methanogenic d. Anaerobic, aerobic, thermophilic, high-pressure tolerant, and hydrophilic e. Archaea are not divided into groups; they are a specific group of their own.