Microbiology, 9e (Tortora)Chapter 27

Objective Questions

1)

Which of the following is not a habitat for an extremophile? A)

Acid mine wash B)

The Atlantic Ocean C)

Inside rock D)

Salt- evaporating pond E)

100°C water

2)

Which of the following organisms is using sulfur as a source of energy? A)

Thiobacillus: H2S → S0

B)

Desulfovibrio: SO42- → H2S C)

Proteus: Amino acids → H2S D)

Redwood tree: SO42- → Amino acids E)

None of the above

3)

Which of the following is not a symbiotic pair of organisms? A)

Elk and rumen bacteria B)

Orchid and mycorrhizae C)

Onions and arbuscules D)

Bean plant and Rhizobium E)

Sulfur and Thiobacillus

4)

In which of the

following animals would you expect to find a specialized organ that holds cellulose-degrading bacteria and fungi?

A)

Cat B)

Dog C)

Termite D)

Human E)

Wolf

5)

Which of the following pairs is mismatched? A)

Rhizobium legumes B)

Bacillus thuringiensis insect control C)

Thiobacillus ferrooxidans uranium mining D)

Frankia alders E)

Lichen an alga and a bacterium

6)

The addition of untreated sewage to a freshwater lake would cause the biochemical oxygen demand to A)

Increase. B)

Decrease. C)

Stay the same. D)

Can't tell.

7)

Coal formation A)

Requires aerobic conditions. B)

Requires anaerobic conditions. C)

The amount of oxygen doesn't make any difference.

8)

A trickling filter A)

Requires aerobic conditions. B)

Requires anaerobic conditions. C)

The amount of oxygen doesn't make any difference.

9)

6H2S + 6CO2 →light 6S0 + glucose A)

Takes place under aerobic conditions. B)

Takes place under anaerobic conditions. C)

The amount of oxygen doesn't make any difference.

10)

Nitrogen fixation A)

Requires aerobic conditions. B)

Requires anaerobic conditions. C)

The amount of oxygen doesn't make any difference.

11)

Sludge digestion A)

Takes place under aerobic conditions. B)

Takes place under anaerobic conditions. C)

The amount of oxygen doesn't make any difference.

12)

Primary sewage treatment A)

Takes place under aerobic conditions. B)

Takes place under anaerobic conditions. C)

The amount of oxygen doesn't make any difference.

13)

NH3 → NO2-

A)

Takes place under aerobic conditions. B)

Takes place under anaerobic conditions. C)

The amount of oxygen doesn't make any difference.

14)

Bioreme diation of petroleum A)

Takes place under aerobic conditions. B)

Takes place under anaerobic conditions. C)

The amount of oxygen doesn't make any difference.

15)

Which of the following equations represents anaerobic respiration? A)

H2S → S0

B)

NO3- → NO2-

C)

Amino acids → H2S D)

SO42- → Amino acids

E)

None of the above

16)

Biochem ical oxygen demand is a measure of A)

The number of bacteria present in a water sample. B)

The amount of oxygen present in a water sample. C)

The amount of organic matter present in a water sample. D)

The amount of undissolved solid matter present in a water sample. E)

All of the above.

17)

Eighty- one percent of the microorganisms in the soil are A)

Actinomycetes . B)

Algae C)

Bacteria. D)

Fungi. E)

Protozoa.

18)

Most of the microorganisms in the soil are found at a depth A)

Between 3 and 8 cm. B)

Between 20 and 25 cm. C)

Between 35 and 40 cm. D)

Between 65 and 75 cm. E)

Evenly distributed from the surface to 76 cm.

19)

Which of the following terms describes NO3- → N2? A)

Ammonificati on B)

Denitrification C)

Nitrification D)

Nitrogen fixation E)

None of the above

20)

Which of the following terms describes N2 → NH3? A)

Ammonificati on B)

Denitrification C)

Nitrification D)

Nitrogen fixation E)

None of the above

21)

Which of the following terms describes NH3 → NO2- → NO3-? A)

Ammonificati on B)

Denitrification C)

Nitrification D)

Nitrogen fixation E)

None of the above

22)

Which of the following terms describes Amino acids (-NH2) → NH3? A)

Ammonificati on B)

Denitrification C)

Nitrification D)

Nitrogen fixation E)

None of the above

23)

Nitrosom onas and Nitrobacter are capable of A)

Ammonificati on. B)

Denitrification . C)

Nitrification. D)

Nitrogen fixation. E)

None of the above

]

24)

This process is done by Rhizobium and certain cyanobacteria: A)

Ammonificati on B)

Denitrification C)

Nitrification D)

Nitrogen fixation E)

None of the above

25)

Which of the following is an assimilation process? A)

Thiobacillus: H2S → S0

B)

Desulfovibrio: SO42- → H2S C)

Proteus: Amino acids → H2S D)

Redwood tree: SO42- → Amino acids E)

None of the above

26)

Which wastewater treatment process is responsible for removal of most of the BOD in sewage? A)

Anaerobic sludge digestion B)

Primary sewage treatment C)

Secondary sewage treatment D)

Tertiary sewage treatment E)

Water treatment

27)

Which wastewater treatment process produces BOD-containing effluent used for irrigation? A)

Anaerobic sludge digestion B)

Primary sewage treatment C)

Secondary sewage treatment D)

Tertiary sewage treatment E)

Water treatment

28)

Residual chlorine must be maintained in A)

Anaerobic sludge digestion B)

Primary sewage treatment C)

Secondary sewage treatment D)

Tertiary sewage treatment E)

Water treatment

29)

Sedimen tation of sludge occurs in A)

Anaerobic sludge digestion B)

Primary sewage treatment. C)

Secondary sewage treatment. D)

Tertiary sewage treatment. E)

Water treatment

30)

The product of which process contains the highest BOD? A)

Anaerobic sludge digestion B)

Primary sewage treatment C)

Secondary sewage treatment D)

Tertiary sewage treatment E)

Water treatment

31)

Zoogloea form flocculent masses in A)

Anaerobic sludge digestion. B)

Primary sewage treatment. C)

Secondary sewage treatment. D)

Tertiary sewage treatment. E)

Water treatment.

32)

Rotating biological contactor are used in A)

Anaerobic sludge digestion. B)

Primary sewage treatment. C)

Secondary sewage treatment. D)

Tertiary sewage treatment. E)

Water treatment.

33)

Aerobic respiration occurs in A)

Anaerobic sludge digestion. B)

Primary sewage treatment. C)

Secondary sewage treatment. D)

Tertiary sewage treatment. E)

Water treatment.

34)

Anaerobi c respiration occurs in A)

Anaerobic sludge digestion. B)

Primary sewage treatment. C)

Secondary sewage treatment. D)

Tertiary sewage treatment. E)

Water treatment.

35)

Filtration to remove protozoa occurs in A)

Anaerobic sludge digestion. B)

Primary sewage treatment. C)

Secondary sewage treatment. D)

Tertiary sewage treatment. E)

Water treatment.

36)

Which of the following do not fix atmospheric nitrogen? A)

Cyanobacteria B)

Lichens C)

Mycorrhizae D)

Frankia E)

Azotobacter

37)

Which of the following pairs is mismatched? A)

CO2 + 4H2 → CH4 + 2H2O Methane-producing bacteria B)

Fe2+ → Fe3+ Thiobacillus ferrooxidans C)

6CO2 + 6H2O → C6H12O6 + 6O2 Clostridium D)

N2 + 6H+ → 2NH3 Beijerinckia

E)

SO42- + 10H+ → H2S + 4H2O Desulfovibrio

38)

Bacteria can increase the Earth's temperature by A)

Generating a great deal of heat in metabolism. B)

Producing CH4, which is a greenhouse gas. C)

Using the greenhouse gas CO2. D)

Providing nutrients for plant growth. E)

Oxidizing CH4.

39)

The bacteria contributing most of the bacterial biomass to soil are A)

Actinomycetes . B)

Rhizobiaceae. C)

Chemoautotro phs. D)

Photoheterotr ophs. E)

Coliforms.

40)

In one hospital, Pseudomonas

aeruginosa serotype 10 infected the biliary tract of 10% of 1300 patients who underwent gastrointestinal endoscopic procedures. After each use, endoscopes were washed with an automatic reprocessor that flushed detergent and glutaraldehyde through the endoscopes followed by a tap water rinse. P. aeruginosa 10 was not isolated from the detergent, glutaraldehyde, or tap water. What was the source of the infections?

A)

Bacterial cell walls in the water B)

A biofilm in the reprocessor C)

Contaminated disinfectant D)

Fecal contamination of the bile ducts

Figure 27.1

41)

Where are photosynthetic bacteria most likely to be found in Figure 27.1? A)

A B)

B C)

C D)

A and B E)

B and C

42)

Where are eukaryotic algae most likely to be found in Figure 27.1? A)

A B)

B C)

C D)

A and B E)

B and C

43)

The bacteria that grow first in the microbial succession in a compost pile are A)

Anaerobic mesophiles. B)

Aerobic thermophiles. C)

Anaerobic psychrophiles. D)

Aerobic mesophiles. E)

None of the above.

44)

The release of phosphate-containing detergents into a river would A)

Kill algae. B)

Increase algal growth. C)

Kill bacteria. D)

Increase oxygen in the water. E)

None of the above.

45)

All of the following are true about releasing untreated sewage into a river except A)

It is a health hazard. B)

It increases the BOD. C)

It decreases the dissolved oxygen. D)

It kills bacteria. E)

None of the above.