front 1 45) Bacteria that emit light can be used as biosensors because they A) migrate to hazardous chemical. | back 1 Answer D |
front 2 1) In water treatment, the purpose of flocculation is to remove microbes, such as Giardia and Cryptosporidium. | back 2 False |
front 3 1) All of the following are habitats for extremophiles EXCEPT | back 3 Answer B |
front 4 2) Which of the following organisms is using sulfur as a source of
energy? | back 4 Answer A |
front 5 3) Which of the following is NOT a symbiotic pair of
organisms? | back 5 Answer E |
front 6 4) All of the following are true of mycorrhizae EXCEPT | back 6 Answer C |
front 7 5) The guano deposited by seabirds is used a source for which of the
following fertilizer components? | back 7 Answer A |
front 8 6) Adding untreated sewage to a freshwater lake would cause the
biochemical oxygen demand to | back 8 Answer A |
front 9 7) In freshwater lakes and ponds, the majority of photosynthetic
microbes are located in the ________ zone(s). | back 9 Answer C |
front 10 8) All of the following are used in secondary sewage treatment
EXCEPT | back 10 Answer D |
front 11 9) 6H2S + 6CO2 --light--> 6S0 + glucose | back 11 Answer B |
front 12 10) Which of the following requires aerobic conditions? | back 12 Answer D |
front 13 11) All of the following organisms are involved in carbon fixation
EXCEPT | back 13 Answer E |
front 14 12) What stage of sewage treatment produces methane? | back 14 Answer D |
front 15 13) NH3 → NO2- | back 15 Answer A |
front 16 14) Bioremediation of petroleum | back 16 Answer A |
front 17 15) Biochemical oxygen demand is a measure of the | back 17 Answer C |
front 18 16) For the biogeochemical cycles of the following elements, which
does NOT have an atmospheric cycle? | back 18 Answer B |
front 19 17) Which of the following is required for composting? | back 19 Answer C |
front 20 18) Which step in Figure 27.1 represents anaerobic
respiration? | back 20 Answer B |
front 21 19) Which term in Figure 27.1 describes step V? | back 21 Answer E |
front 22 20) Which step in Figure 27.1 represents the following reaction:
amino acid (-NH2) → NH3? | back 22 Answer C |
front 23 21) Nitrification is beneficial to farmers. It is represented by
which step in Figure 27.1? | back 23 Answer A |
front 24 22) Which of the following terms describes step III in Figure
27.1? | back 24 Answer A |
front 25 23) Which of the following terms describes NO3- → NO2- → N2O →
N2? | back 25 Answer B |
front 26 24) Which of the following is an assimilation process? | back 26 Answer D |
front 27 25) Which wastewater treatment process is responsible for removal of
most of the BOD in sewage? | back 27 Answer C |
front 28 26) Which wastewater treatment process produces BOD-containing
effluent used for irrigation? | back 28 Answer C |
front 29 27) Residual chlorine must be maintained in | back 29 Answer E |
front 30 28) Sedimentation of sludge occurs in | back 30 Answer B |
front 31 29) The product of which process contains the highest BOD? | back 31 Answer B |
front 32 30) Zoogloea form flocculent masses in | back 32 Answer C |
front 33 31) Drinking water supplies are routinely tested for the presence
of | back 33 Answer C |
front 34 32) Aerobic respiration occurs in | back 34 Answer C |
front 35 33) In the ONPG and MUG test for fecal coliforms, a sample that is
positive for E. coli will be | back 35 Answer A |
front 36 34) Filtration to remove protozoa occurs in | back 36 Answer E |
front 37 35) Which of the following do NOT fix atmospheric nitrogen? | back 37 Answer C |
front 38 36) Which of the following is mismatched? | back 38 Answer C |
front 39 37) Bacteria can increase the Earth's temperature by | back 39 Answer B |
front 40 38) Which of the following is NOT characteristic of fecal
coliforms? | back 40 Answer E |
front 41 39) Which one of the following processes in sewage treatment requires
bacterial metabolism? | back 41 Answer C |
front 42 40) Where are photosynthetic bacteria most likely to be found in
Figure 27.2? | back 42 Answer D |
front 43 41) Where are the benthic microbes such as Desulfovibrio and
Clostridium most likely to be found in Figure 27.2? | back 43 Answer C |
front 44 42) In the early 1900s, cities such as Philadelphia reduced the
incidence of typhoid fever by | back 44 Answer C |
front 45 43) The release of phosphate-containing detergents into a river
would | back 45 Answer B |
front 46 44) Untreated sewage is released into a river. Which of the following
statements is FALSE? | back 46 Answer D |
front 47 2) Bioremediation involves the use of microbes to degrade or detoxify pollutants. | back 47 True |
front 48 3) The water from tertiary sewage treatment can be used as drinking water. | back 48 True |
front 49 4) The purpose of tertiary sewage treatment is to remove all of the phosphorus, nitrogen, and BOD left from secondary treatment. | back 49 True |
front 50 5) The BOD is a measurement of the amount of bacteria present before and after the sewage treatment process. | back 50 False |
front 51 6) The bacteriological safety of drinking water is determined by testing water samples for the presence of human pathogens. | back 51 False |
front 52 7) The dense growth of algae in an algal bloom leads to increased oxygen levels in lakes that enhance the habitat for fish. | back 52 False |
front 53 8) Microorganisms in deep-sea vents and caves serve as autotrophic primary producers in the absence of sunlight. | back 53 True |
front 54 9) Nitrogen fixation by bacteria occurs only in the root nodules of leguminous plants. | back 54 False |
front 55 10) In small communities lacking municipal sewage systems, sewage is treated in septic systems or oxidation ponds. | back 55 True |