Question 1

Chemoautotrophs use an inorganic carbon source.

Accepted Answer

A) True 
 B)False  False

Question 2

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 3

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)  selective 
A)  complex 
B)  defined 
C)  synthetic 
D)  differential 
E)  selective E

Question 4

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 5

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)  halophiles 
A)  psychrophiles 
B)  acidophiles 
C)  barophiles 
D)  neutralophiles 
E)  halophiles

Question 6

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. 
A)  antiseptic. 
B)  microbiocidal. 
C)  antibacterial agent. 
D)  microbiostatic. 
E)  disinfectant.

Question 7

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

Question 8

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

Question 9

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 killed 
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 killed

Question 10

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 measurement 
A)  microscopic count 
B)  viable plate count 
C)  Coulter counter 
D)  flow cytometer 
E)  turbidity measurement

Question 11

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 counter 
A)  microscopic count 
B)  flow cytometer 
C)  dry weight 
D)  turbidity measurement 
E)  Coulter counter

Question 12

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 13

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. 
A)  amino acids. 
B)  nitrogenous bases. 
C)  growth factors. 
D)  carbohydrates. 
E)  vitamins.

Question 14

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. 
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.

Question 15

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 16

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)  barophiles 
A)  alkaliphiles 
B)  psychrophiles 
C)  acidophiles 
D)  neutralophiles 
E)  barophiles

Question 17

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)  conidia 
A)  budding 
B)  binary fission 
C)  sporulation 
D)  hypha 
E)  conidia

Question 18

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

Question 19

In which growth phase do bacteria grow exponentially?

Accepted Answer

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

Question 20

Disinfectants are applied to living tissue such as skin.

Accepted Answer

A) True 
 B)False

Exam 7: Fundamentals of Microbial Growth

Chemoautotrophs use an inorganic carbon source.

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

In which growth phase do bacteria grow exponentially?

Disinfectants are applied to living tissue such as skin.

Introduction to Microbiology

Biochemistry Basics

Introduction to Prokaryotic Cells

Introduction to Eukaryotic Cells

Genetics

Viruses and Prions

Microbial Metabolism

Principles of Infectious Disease and Epidemiology

Host-Microbe Interactions and Pathogenesis

Innate Immunity

Adaptive Immunity

Immune System Disorders

Vaccines and Biotechnology-Based Diagnostics and Therapeutics

Antimicrobial Drugs

Respiratory System Infections

Skin and Eye Infections

Nervous System Infections

Digestive System Infections

Urinary and Reproductive System Infections

Cardiovascular and Lymphatic Infections

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