Question 1

Which of the following terms refers to microbes that thrive in high- salt environments?

Accepted Answer

A)   psychrophiles
B)   acidophiles
C)   barophiles
D)   neutralophiles
E)   halophilesF) A) and D)
G) B) and C)

Question 2

Staphylococcus aureus tolerates higher solute concentrations but doesn't grow especially well in them. Therefore, it is called a

Accepted Answer

A)   mesophilic neutralophile.
B)   facultative halophile.
C)   halo- alkaliphile.
D)   halo- thermophile.
E)   halo- psychrophile.F) A) and B)
G) B) and E)

Question 3

Which of the following factors does not affect the efficiency of a germicide?

Accepted Answer

A)   how the object is used
B)   the presence of excessive organic substances like blood, soil, or fecal matter
C)   what infectious agents are most likely present
D)   the presence of excessive inorganic substances like minerals and salts in hard water
E)   the number of microbes to be killedF) D) and E)
G) B) and E)

Question 4

Disinfectants are applied to living tissue such as skin.

Accepted Answer

A) True 
 B)False

Question 5

What are two benefits to a germicide that quickly evaporates compared to a germicide that leaves a residue behind?

Accepted Answer

A germicide that quickly evaporates is c...

Question 6

Which of the following is an indirect cell- counting method?

Accepted Answer

A)   microscopic count
B)   viable plate count
C)   Coulter counter
D)   flow cytometer
E)   turbidity measurementF) A) and E)
G) All of the above

Question 7

Which of the following cell- counting methods is capable of differentiating between living and dead cells?

Accepted Answer

A)   microscopic count
B)   flow cytometer
C)   dry weight
D)   turbidity measurement
E)   Coulter counterF) C) and E)
G) A) and B)

Question 8

Which type of media has ingredients that foster the growth of certain bacteria while suppressing the growth of others?

Accepted Answer

A)   complex
B)   defined
C)   synthetic
D)   differential
E)   selectiveF) A) and E)
G) A) and D) E

Question 9

A chemical used to control microbial growth on inanimate objects is called a(n)

Accepted Answer

A)   antiseptic.
B)   microbiocidal.
C)   antibacterial agent.
D)   microbiostatic.
E)   disinfectant.F) All of the above
G) D) and E)

Question 10

Which of the following pH classifications would be able to grow in a pickle jar with vinegar?

Accepted Answer

A)   alkaliphiles
B)   psychrophiles
C)   acidophiles
D)   neutralophiles
E)   barophilesF) A) and E)
G) A) and D)

Question 11

The necessary substances that a cell can't make on its own are called

Accepted Answer

A)   amino acids.
B)   nitrogenous bases.
C)   growth factors.
D)   carbohydrates.
E)   vitamins.F) All of the above
G) B) and C)

Question 12

In which growth phase do bacteria grow exponentially?

Accepted Answer

A)   log phase
B)   acculturation phase
C)   lag phase
D)   stationary phase
E)   habituation phaseF) A) and D)
G) A) and C)

Question 13

Which of the following terms refers to bacteria reproducing asexually by dividing the cell in half and resulting in two daughter cells?

Accepted Answer

A)   budding
B)   binary fission
C)   sporulation
D)   hypha
E)   conidiaF) None of the above
G) B) and E)

Question 14

Name one benefit and one challenge to using genetic methods to identify microbes.

Accepted Answer

Genetic methods are good at identifying microbes because they can be quick. However, they rely on the use of previously designed probes, which means that you already have to have an idea about what you are looking for. A negative result only tells you, you don't have that kind of microbe, it doesn't tell you which kind you do have or even if you have anything at all.

Question 15

Extreme thermophiles that live near thermal vents must have all of the following adaptations except

Accepted Answer

A)   plasma membrane lipids that are highly unsaturated.
B)   they must also be barophiles.
C)   plasma membrane lipids that are highly branched and saturated.
D)   specialized chaperone proteins.
E)   proteins that resist thermal denaturing.F) B) and E)
G) A) and B)

Question 16

In the death phase of a closed pure batch system a small number of the cells survive by adapting to the new waste- filled environment and by feeding off dead cells.

Accepted Answer

A) True 
 B)False

Question 17

Chemoautotrophs use an inorganic carbon source.

Accepted Answer

A) True 
 B)False  False

Question 18

Which group of microbes prefers using oxygen but can survive without it?

Accepted Answer

A)   aerotolerant anaerobe
B)   obligate aerobe
C)   microaerophile
D)   obligate anaerobe
E)   facultative anaerobeF) B) and D)
G) A) and B)

Question 19

Name three differences between how microbes grow in a closed pure batch system as compared to in nature.

Accepted Answer

Microbes are unlikely to experience a ph...

Question 20

In which growth phase do bacteria adjust to their environment and grow little, if any?

Accepted Answer

A)   lag phase
B)   acculturation phase
C)   log phase
D)   stationary phase
E)   habituation phaseF) B) and E)
G) None of the above

Exam 7: Fundamentals of Microbial Growth

Which of the following terms refers to microbes that thrive in high- salt environments?

Correct Answer
verified

Staphylococcus aureus tolerates higher solute concentrations but doesn't grow especially well in them. Therefore, it is called a

Correct Answer
verified

Which of the following factors does not affect the efficiency of a germicide?

Correct Answer
verified

Disinfectants are applied to living tissue such as skin.

Correct Answer
verified

What are two benefits to a germicide that quickly evaporates compared to a germicide that leaves a residue behind?

Correct Answer
verified
A germicide that quickly evaporates is c...
View Answer

Which of the following is an indirect cell- counting method?

Correct Answer
verified

Which of the following cell- counting methods is capable of differentiating between living and dead cells?

Correct Answer
verified

Which type of media has ingredients that foster the growth of certain bacteria while suppressing the growth of others?

Correct Answer
verified
E

A chemical used to control microbial growth on inanimate objects is called a(n)

Correct Answer
verified

Which of the following pH classifications would be able to grow in a pickle jar with vinegar?

Correct Answer
verified

The necessary substances that a cell can't make on its own are called

Correct Answer
verified

In which growth phase do bacteria grow exponentially?

Correct Answer
verified

Which of the following terms refers to bacteria reproducing asexually by dividing the cell in half and resulting in two daughter cells?

Correct Answer
verified

Name one benefit and one challenge to using genetic methods to identify microbes.

Extreme thermophiles that live near thermal vents must have all of the following adaptations except

Correct Answer
verified

In the death phase of a closed pure batch system a small number of the cells survive by adapting to the new waste- filled environment and by feeding off dead cells.

Correct Answer
verified

Chemoautotrophs use an inorganic carbon source.

Correct Answer
verified
False

Which group of microbes prefers using oxygen but can survive without it?

Correct Answer
verified

Name three differences between how microbes grow in a closed pure batch system as compared to in nature.

Correct Answer
verified
Microbes are unlikely to experience a ph...
View Answer

In which growth phase do bacteria adjust to their environment and grow little, if any?

Correct Answer
verified

Exam 7: Fundamentals of Microbial Growth

Which of the following terms refers to microbes that thrive in high- salt environments?

Correct AnswerverifiedShow Answer

Staphylococcus aureus tolerates higher solute concentrations but doesn't grow especially well in them. Therefore, it is called a

Correct AnswerverifiedShow Answer

Which of the following factors does not affect the efficiency of a germicide?

Correct AnswerverifiedShow Answer

Disinfectants are applied to living tissue such as skin.

Correct AnswerverifiedShow Answer

What are two benefits to a germicide that quickly evaporates compared to a germicide that leaves a residue behind?

Correct AnswerverifiedA germicide that quickly evaporates is c...View AnswerShow Answer

Which of the following is an indirect cell- counting method?

Correct AnswerverifiedShow Answer

Which of the following cell- counting methods is capable of differentiating between living and dead cells?

Correct AnswerverifiedShow Answer

Which type of media has ingredients that foster the growth of certain bacteria while suppressing the growth of others?

Correct AnswerverifiedE

A chemical used to control microbial growth on inanimate objects is called a(n)

Correct AnswerverifiedShow Answer

Which of the following pH classifications would be able to grow in a pickle jar with vinegar?

Correct AnswerverifiedShow Answer

The necessary substances that a cell can't make on its own are called

Correct AnswerverifiedShow Answer

In which growth phase do bacteria grow exponentially?

Correct AnswerverifiedShow Answer

Which of the following terms refers to bacteria reproducing asexually by dividing the cell in half and resulting in two daughter cells?

Correct AnswerverifiedShow Answer

Name one benefit and one challenge to using genetic methods to identify microbes.

Extreme thermophiles that live near thermal vents must have all of the following adaptations except

Correct AnswerverifiedShow Answer

In the death phase of a closed pure batch system a small number of the cells survive by adapting to the new waste- filled environment and by feeding off dead cells.

Correct AnswerverifiedShow Answer

Chemoautotrophs use an inorganic carbon source.

Correct AnswerverifiedFalse

Which group of microbes prefers using oxygen but can survive without it?

Correct AnswerverifiedShow Answer

Name three differences between how microbes grow in a closed pure batch system as compared to in nature.

Correct AnswerverifiedMicrobes are unlikely to experience a ph...View AnswerShow Answer

In which growth phase do bacteria adjust to their environment and grow little, if any?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified
A germicide that quickly evaporates is c...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
E

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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False

Correct Answer
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Correct Answer
verified
Microbes are unlikely to experience a ph...
View Answer

Correct Answer
verified