Nitrification and anammox both
A) create nitrogen gas, but nitrification is aerobic while anammox is anaerobic.
B) oxidize ammonia, but nitrification uses O2 and anammox uses NO2- for electron acceptors.
C) are aerobic processes, but nitrification produces NO3- and annamox produces N2 gas.
D) occur in soils at neutral pH.
Answer: B
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Over several generations in a population, inbreeding tends to
A. decrease the relative proportions of homozygotes. B. decrease the likelihood of heterozygotes. C. stabilize the balance of genotypes predicted by the Hardy-Weinberg equilibrium. D. All of the choices are correct.
Which molecule dissolves in water vapor and falls as acid precipitation?
a. sulfuric acid b. ozone c. mercury d. sulfur dioxide e. carbonic acid
The cells organelles that are surrounded by DOUBLE MEMBRANES and contain their OWN DNA are the ___________________.
a) nucleus, ER, and lysosomes b) nucleus, vacuoles, and chloroplasts c) nucleus, chloroplasts, and mitochondria d) ER, Golgi bodies, and vacuoles
An Italian physician, ________, challenged the concept of spontaneous generation by demonstrating that maggots do not arise from decaying meat but rather from developing fly eggs.
Fill in the blank(s) with the appropriate word(s).