The propagation cycle that occurs in acid mine drainage is caused by
A) reduction of Fe3+ by sulfuric acid.
B) the oxidation of sulfide to sulfuric acid by microbial oxidation of iron (Fe3+).
C) microbial sulfate reduction.
D) low pH and high oxygen concentrations.
Answer: B
You might also like to view...
1 mole = 1000 millimoles (mmol); 1millimole = 1000 micromoles (µmol). If a solution contains 38231 µmol, what is that amount in mmol?
A. 382.31 mmol. B. 38.231 mmol. C. 3.8231 mmol. D. 3823.1 mmol.
Methanogenic Archaea are
A. obligate anaerobes that produce methane. B. obligate anaerobes that consume methane. C. obligate aerobes that consume methane. D. obligate aerobes that produce methane.
Describe the differences between DNA and RNA.
What will be an ideal response?
The maximum membrane potential that an ion gradient can produce is the
A) action potential. B) membrane potential. C) equilibrium potential. D) threshold potential. E) resting potential.