Question 1

Municipal water treated with chlorine compounds contains

Accepted Answer

A)  no viruses. 
B)  no bacteria at all. 
C)  no endospores. 
D)  no cysts. 
E)  a decreased microbial load. 
A)  no viruses. 
B)  no bacteria at all. 
C)  no endospores. 
D)  no cysts. 
E)  a decreased microbial load. E

Question 2

Potable water is water that

Accepted Answer

A)  is considered safe to drink because it is completely sterile. 
B)  contains biosensors. 
C)  contains a dangerous number of microorganisms. 
D)  is transferred from one place to another. 
E)  contains low amounts of microorganisms and is considered safe to drink. 
A)  is considered safe to drink because it is completely sterile. 
B)  contains biosensors. 
C)  contains a dangerous number of microorganisms. 
D)  is transferred from one place to another. 
E)  contains low amounts of microorganisms and is considered safe to drink. E

Question 3

Which of the following methods of preserving food sterilizes it?

Accepted Answer

A)  canning 
B)  pasteurization 
C)  drying 
D)  gamma radiation 
E)  lyophilization 
A)  canning 
B)  pasteurization 
C)  drying 
D)  gamma radiation 
E)  lyophilization D

Question 4

Reducing the water content of food is a highly effective way of reducing food spoilage.

Accepted Answer

A) True 
 B)False

Question 5

What are the levels of microbial associations in the environment? How do they relate to an ecosystem?

Accepted Answer

Microorganisms are associated with each

Question 6

Which of the following is a nitrogen-fixing bacterium that forms associations with the roots of plants?

Accepted Answer

A)  anaerobic Bacillus species 
B)  Clostridium species 
C)  Rhizobium species 
D)  Azotobacter species 
E)  cyanobacteria 
A)  anaerobic Bacillus species 
B)  Clostridium species 
C)  Rhizobium species 
D)  Azotobacter species 
E)  cyanobacteria

Question 7

The sour flavor in some fermented foods is usually the result of (acetic/benzoid/lactic)acid production.

Accepted Answer

The answer of The sour flavor in some fermented foods...

Question 8

Which of the following infectious diseases currently tops the list of bioterrorist threats?

Accepted Answer

A)  anthrax 
B)  the plague 
C)  smallpox 
D)  botulism 
E)  cholera 
A)  anthrax 
B)  the plague 
C)  smallpox 
D)  botulism 
E)  cholera

Question 9

Most of the nitrogen in the environment is in the form of nitrogen gas,which is the form used by most organisms.

Accepted Answer

A) True 
 B)False

Question 10

A measure of wastewater treatment is its BOD.This measures the

Accepted Answer

A)  biological organism density. 
B)  biphosphate oxidizing demand. 
C)  bacterial optimal density. 
D)  biochemical oxygen demand. 
E)  bioparticulate optical density. 
A)  biological organism density. 
B)  biphosphate oxidizing demand. 
C)  bacterial optimal density. 
D)  biochemical oxygen demand. 
E)  bioparticulate optical density.

Question 11

Benzoic acid is largely a(n)(antifungal/antiprotozoal/pickling)agent and does not affect the growth of many bacteria.

Accepted Answer

The answer of Benzoic acid is largely a(n)(antifungal/antiprotozoal/pickling)agent and does...

Question 12

Cold is preferred for storing food because it retards microbial growth by slowing down metabolic processes.

Accepted Answer

A) True 
 B)False

Question 13

Pickling is an effective means of food preservation involving

Accepted Answer

A)  increasing pH. 
B)  increasing salt concentration. 
C)  reducing pH. 
D)  increasing both salt concentration and pH. 
E)  increasing salt concentration or reducing pH or both. 
A)  increasing pH. 
B)  increasing salt concentration. 
C)  reducing pH. 
D)  increasing both salt concentration and pH. 
E)  increasing salt concentration or reducing pH or both.

Question 14

Smallpox is considered a serious potential biological weapon,whereas anthrax has been successfully used as one.Compare and contrast their potential with regard to the criteria for assessing biological threats.

Accepted Answer

The smallpox virus causes serious illnes

Question 15

When one microbe's metabolic activities create favorable conditions for another microorganism,this is referred to as (competition/cooperation/facilitation).

Accepted Answer

The answer of When one microbe's metabolic activities create favorable...

Question 16

When runoff containing excessive nutrients enters streams and lakes it can result in an overgrowth of cyanobacteria and algae,a process known as

Accepted Answer

A)  eutrophication. 
B)  oxidation. 
C)  fixation. 
D)  ammonification. 
E)  both ammonification and fixation. 
A)  eutrophication. 
B)  oxidation. 
C)  fixation. 
D)  ammonification. 
E)  both ammonification and fixation.

Question 17

Which aquatic zone in a lake will have the highest nutrient levels and therefore the densest microbial populations?

Accepted Answer

A)  the littoral zone 
B)  the limnetic zone 
C)  the profundal zone 
D)  the benthic zone 
E)  the sediment zone 
A)  the littoral zone 
B)  the limnetic zone 
C)  the profundal zone 
D)  the benthic zone 
E)  the sediment zone

Question 18

What was the first substance produced by microorganisms to be used pharmaceutically?

Accepted Answer

A)  penicillin 
B)  streptokinase 
C)  phenylalanine 
D)  rennin 
E)  erythromycin 
A)  penicillin 
B)  streptokinase 
C)  phenylalanine 
D)  rennin 
E)  erythromycin

Question 19

Algae and protozoa in the soil are quite hardy,and therefore their abundance is not a useful indicator of environmental pollution.

Accepted Answer

A) True 
 B)False

Question 20

Amino acid and vitamin supplements are prepared from extracts of microbial cultures.

Accepted Answer

A) True 
 B)False

Exam 26: Applied and Environmental Microbiology

Municipal water treated with chlorine compounds contains

Potable water is water that

Which of the following methods of preserving food sterilizes it?

Reducing the water content of food is a highly effective way of reducing food spoilage.

What are the levels of microbial associations in the environment? How do they relate to an ecosystem?

Which of the following is a nitrogen-fixing bacterium that forms associations with the roots of plants?

The sour flavor in some fermented foods is usually the result of (acetic/benzoid/lactic)acid production.

Which of the following infectious diseases currently tops the list of bioterrorist threats?

Most of the nitrogen in the environment is in the form of nitrogen gas,which is the form used by most organisms.

A measure of wastewater treatment is its BOD.This measures the

Benzoic acid is largely a(n)(antifungal/antiprotozoal/pickling)agent and does not affect the growth of many bacteria.

Cold is preferred for storing food because it retards microbial growth by slowing down metabolic processes.

Pickling is an effective means of food preservation involving

Smallpox is considered a serious potential biological weapon,whereas anthrax has been successfully used as one.Compare and contrast their potential with regard to the criteria for assessing biological threats.

When one microbe's metabolic activities create favorable conditions for another microorganism,this is referred to as (competition/cooperation/facilitation).

When runoff containing excessive nutrients enters streams and lakes it can result in an overgrowth of cyanobacteria and algae,a process known as

Which aquatic zone in a lake will have the highest nutrient levels and therefore the densest microbial populations?

What was the first substance produced by microorganisms to be used pharmaceutically?

Algae and protozoa in the soil are quite hardy,and therefore their abundance is not a useful indicator of environmental pollution.

Amino acid and vitamin supplements are prepared from extracts of microbial cultures.

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant DNA Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Pathogenic Gram Positive Bacteria

Pathogenic Gram-Negative Cocci and Bacilli

Rickettsias, Chlamydias, Spirochetes, and Vibrios

Pathogenic Fungi

Parasitic Protozoa, Helminths, and Arthropod Vectors

Pathogenic DNA Viruses

Pathogenic RNA Viruses

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