Ammonium ion (NH4+) is oxidized to nitrate (NO3-) in a process known as
A. assimilation.
B. anammox.
C. nitrogen fixation.
D. nitrification.
E. denitrification.
Answer: D
You might also like to view...
Which one of the following is an example of osmosis?
A. Glucose is transported from our blood stream across cell membranes and into the cytoplasm. B. Sodium is pumped across a cell to increase its concentration on one side of the cell membrane. C. A broken bottle of perfume is able to be smelled throughout the department store. D. Cells of our kidneys reabsorb water to prevent it from all leaving through our urine. E. A bacterium in the blood stream is engulfed by a white blood cell.
A recent book by a reputable biologist suggests there is a deep, hot biosphere under the earth's crust that may have more biomass than all life at the earth's surface. This would primarily rely on what organisms?
A. primitive animals B. primitive heat-loving plants C. fungi living on the detritus from above D. thermoacidophilic archaea E. viruses
How many carbon dioxide molecules are produced by the complete aerobic breakdown of one glucose molecule?
A. 2 B. 3 C. 4 D. 5 E. 6
Human asymptomatic carriers are common in
A) Balantidiasis B) Amebiasis and trichomoniasis C) Elephantiasis D) Cryptosporidiosis and malaria E) Trypanosomias