A certain wastewater treatment plant uses aerobic bacteria, anaerobic bacteria, and archaebacteria during secondary treatment of sewage. Unfortunately, during a bad blizzard the aerated tanks froze, killing the microbes inside. What is likely to result?
A. Solid material will not be effectively filtered out.
B. Floc will not be effectively filtered out.
C. Methane production will go down.
D. Floc levels will diminish.
Answer: D
You might also like to view...
Many enzyme catalyzed reactions are freely reversible; however, some key steps require separate enzymes for the reverse step in order to provide for independent regulation of anabolic and catabolic pathways.
Answer the following statement true (T) or false (F)
Which of the following is true of transport in phloem?
A. It occurs from sink to source. B. It only occurs from leaves to roots. C. It transports materials down the plant body. D. It is driven by turgor pressure. E. It is usually a passive process.
Which of the following statements about the loop of Henle is correct?
A. The thick segment of the ascending limb is impermeable to water. B. The descending limb actively transports electrolytes into the interstitial fluid. C. Water moves from the interstitial fluid into the descending limb of the loop of Henle. D. The filtrate is more concentrated when it leaves the loop of Henle than when it enters the loop. E. All of these answer options are correct.
In mice, the gene for insulin-like growth factor is imprinted. During embryonic development, only the paternal allele for insulin-like growth factor is expressed. This means
A. that the paternal allele is imprinted. B. that the maternal allele is imprinted. C. that the paternal allele is mutated. D. that the paternal allele is hyper-methylated. E. that the maternal allele is expressed.