Question 1

Compare and contrast the two types of foodborne disease.

Accepted Answer

Foodborne diseases are also known as foo...

Question 2

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.F) A) and B)
G) None of the above

Question 3

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 aerosolsF) A) and E)
G) A) and D)

Question 4

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 DesulfovibrioF) C) and D)
G) None of the above

Question 5

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

Accepted Answer

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

Question 6

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 7

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.F) C) and D)
G) D) and E)

Question 8

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.F) A) and B)
G) A) and C)

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

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, microhabitatsF) A) and E)
G) A) and B)

Question 12

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)   wineF) A) and C)
G) A) and E)

Question 13

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.F) A) and D)
G) B) and C)

Question 14

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 15

Which of the following methods of preserving food sterilizes it?

Accepted Answer

A)   drying
B)   canning
C)   lyophilization
D)   pasteurization
E)   gamma radiationF) C) and D)
G) None of the above

Question 16

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.F) A) and E)
G) All of the above

Question 17

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 fixationF) C) and E)
G) D) and E)

Question 18

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 19

Which of the following is an application of proteases?

Accepted Answer

A)   cheese
B)   vodka
C)   wine
D)   indigo
E)   meat tenderizerF) A) and D)
G) B) and E)

Question 20

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

Exam 25: Applied and Environmental Microbiology

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

Correct AnswerverifiedShow Answer

Compare and contrast the two types of foodborne disease.

Correct AnswerverifiedFoodborne diseases are also known as foo...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is an application of proteases?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following methods of preserving food sterilizes it?

Correct AnswerverifiedShow Answer

The fermentation product known as silage is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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Foodborne diseases are also known as foo...
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