Question 1

Which of the following sets of characteristics describes the highest level of threat potential from biological weapons?

Accepted Answer

A)  a microbe that can be introduced into food during packaging and withstands refrigerator temperatures but not typical cooking temperatures 
B)  a waterborne toxin that is easily introduced into public water supplies and does not replicate in humans 
C)  a pathogen of livestock transmitted by contact with infected animals but not infected people 
D)  a pathogen of wheat that could be delivered using crop dusters 
E)  a human pathogen easily produced as an aerosol and transmissible by respiratory aerosols 
A)  a microbe that can be introduced into food during packaging and withstands refrigerator temperatures but not typical cooking temperatures 
B)  a waterborne toxin that is easily introduced into public water supplies and does not replicate in humans 
C)  a pathogen of livestock transmitted by contact with infected animals but not infected people 
D)  a pathogen of wheat that could be delivered using crop dusters 
E)  a human pathogen easily produced as an aerosol and transmissible by respiratory aerosols

Question 2

Compare and contrast the two types of foodborne disease.

Accepted Answer

Foodborne diseases are also known as foo

Question 3

What type of reactions take place in the portion of the sulfur cycle indicated in the figure?

Accepted Answer

A)  denitrification 
B)  fermentation 
C)  dissimilation 
D)  oxidation-reduction 
E)  carbon fixation 
A)  denitrification 
B)  fermentation 
C)  dissimilation 
D)  oxidation-reduction 
E)  carbon fixation

Question 4

Which of the following microorganisms is the most commonly used indicator organism for water quality testing?

Accepted Answer

A)  Escherichia coli 
B)  Salmonella spp. 
C)  Streptococcus thermophilus 
D)  Hepatitis A virus 
E)  Shigella spp. 
A)  Escherichia coli 
B)  Salmonella spp. 
C)  Streptococcus thermophilus 
D)  Hepatitis A virus 
E)  Shigella spp.

Question 5

Which of the following is an application of proteases?

Accepted Answer

A)  cheese 
B)  vodka 
C)  wine 
D)  indigo 
E)  meat tenderizer 
A)  cheese 
B)  vodka 
C)  wine 
D)  indigo 
E)  meat tenderizer

Question 6

Bioremediation is the process of using organisms to clean up toxic, hazardous compounds by degrading them to less harmful substances.

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

Which of the following statements concerning the phosphorus cycle in bacteria is TRUE?

Accepted Answer

A)  The molecule is converted to a gaseous state and is lost to the environment. 
B)  It is the most important process for synthesizing proteins and nucleic acids. 
C)  The molecule cycles between different organic molecules. 
D)  The molecule changes from insoluble to soluble forms. 
E)  The molecule alternates among several oxidative states. 
A)  The molecule is converted to a gaseous state and is lost to the environment. 
B)  It is the most important process for synthesizing proteins and nucleic acids. 
C)  The molecule cycles between different organic molecules. 
D)  The molecule changes from insoluble to soluble forms. 
E)  The molecule alternates among several oxidative states.

Question 9

Which of the following is the correct sequence of microbial associations from smallest to largest?

Accepted Answer

A)  communities, microhabitats, ecosystem, guilds, populations 
B)  populations, guilds, communities, microhabitats, ecosystem 
C)  ecosystem, populations, communities, microhabitats, guilds 
D)  populations, communities, microhabitats, ecosystem, guilds 
E)  populations, communities, ecosystem, guilds, microhabitats 
A)  communities, microhabitats, ecosystem, guilds, populations 
B)  populations, guilds, communities, microhabitats, ecosystem 
C)  ecosystem, populations, communities, microhabitats, guilds 
D)  populations, communities, microhabitats, ecosystem, guilds 
E)  populations, communities, ecosystem, guilds, microhabitats

Question 10

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

Accepted Answer

The answer of When one microbeʹs metabolic activities create favorable...

Question 11

Which of the following results when ethanol is allowed to oxidize to acetic acid following the fermentation of fruit, grain, or vegetables?

Accepted Answer

A)  champagne 
B)  vinegar 
C)  beer 
D)  malt 
E)  wine 
A)  champagne 
B)  vinegar 
C)  beer 
D)  malt 
E)  wine

Question 12

Botryococcus braunii is an alga that produces hydrocarbons at (10/20/30) percent of its dry weight and could be harvested in the future as an alternative fuel.

Accepted Answer

The answer of Botryococcus braunii is an alga that produces...

Question 13

A new industrial park in your community dumps its wastewater into a large aerated pond, to which nutrients are added. The water from this pond makes its way into a nearby marsh, which eventually drains into a slow-moving stream. This is an example of

Accepted Answer

A)  natural bioremediation. 
B)  artificial bioremediation. 
C)  bioreporter use. 
D)  a method to make potable water. 
E)  natural fermentation. 
A)  natural bioremediation. 
B)  artificial bioremediation. 
C)  bioreporter use. 
D)  a method to make potable water. 
E)  natural fermentation.

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

During treatment of water to make it potable, about 90% of the microbes are removed

Accepted Answer

A)  by treatment with biosensors. 
B)  by treatment with chlorine or ozone. 
C)  in the sedimentation step. 
D)  in the filtration step. 
E)  by preliminary fermentation. 
A)  by treatment with biosensors. 
B)  by treatment with chlorine or ozone. 
C)  in the sedimentation step. 
D)  in the filtration step. 
E)  by preliminary fermentation.

Question 16

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...

Question 17

Which of the following methods of preserving food sterilizes it?

Accepted Answer

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

Question 18

Garlic contains an antimicrobial substance called (allicin/penicillin/streptomycin).

Accepted Answer

The answer of Garlic contains an antimicrobial substance called (allicin/penicillin/streptomycin)....

Question 19

The fermentation product known as silage is

Accepted Answer

A)  a meat product. 
B)  a means of making plant materials more appealing to livestock. 
C)  a step in the production of brandy. 
D)  a means of food preservation. 
E)  made from milk. 
A)  a meat product. 
B)  a means of making plant materials more appealing to livestock. 
C)  a step in the production of brandy. 
D)  a means of food preservation. 
E)  made from milk.

Question 20

Which of the following oxidize H2S to SO4-2, the form of sulfur animals use for their metabolism?

Accepted Answer

A)  Desulfovibrio 
B)  purple sulfur bacteria 
C)  Beggiatoa 
D)  both Beggiatoa and purple sulfur bacteria 
E)  both Beggiatoa and Desulfovibrio 
A)  Desulfovibrio 
B)  purple sulfur bacteria 
C)  Beggiatoa 
D)  both Beggiatoa and purple sulfur bacteria 
E)  both Beggiatoa and Desulfovibrio

Exam 25: Applied and Environmental Microbiology

Which of the following sets of characteristics describes the highest level of threat potential from biological weapons?

Compare and contrast the two types of foodborne disease.

What type of reactions take place in the portion of the sulfur cycle indicated in the figure?

Which of the following microorganisms is the most commonly used indicator organism for water quality testing?

Which of the following is an application of proteases?

Bioremediation is the process of using organisms to clean up toxic, hazardous compounds by degrading them to less harmful substances.

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

Which of the following statements concerning the phosphorus cycle in bacteria is TRUE?

Which of the following is the correct sequence of microbial associations from smallest to largest?

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

Which of the following results when ethanol is allowed to oxidize to acetic acid following the fermentation of fruit, grain, or vegetables?

Botryococcus braunii is an alga that produces hydrocarbons at (10/20/30) percent of its dry weight and could be harvested in the future as an alternative fuel.

A new industrial park in your community dumps its wastewater into a large aerated pond, to which nutrients are added. The water from this pond makes its way into a nearby marsh, which eventually drains into a slow-moving stream. This is an example of

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

During treatment of water to make it potable, about 90% of the microbes are removed

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

Which of the following methods of preserving food sterilizes it?

Garlic contains an antimicrobial substance called (allicin/penicillin/streptomycin).

The fermentation product known as silage is

Which of the following oxidize H2S to SO4-2, the form of sulfur animals use for their metabolism?

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

Aids and Other Immune Disorders

Microbial Diseases of the Skin and Wounds

Microbial Diseases of the Nervous System and Eyes

Microbial Cardiovascular and Systemic Diseases

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

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