Question 1

An aquatic microbe that can grow only near the surface of the water is probably which of the following?

Accepted Answer

A)  a phototroph 
B)  a heterotroph 
C)  a chemotroph 
D)  a lithotroph 
E)  an anaerobe 
A)  a phototroph 
B)  a heterotroph 
C)  a chemotroph 
D)  a lithotroph 
E)  an anaerobe

Question 2

The events of binary fission are
I.the cell doubles in size
II.the DNA is replicated
III.the cell forms a septum
IV.the cell separates from its offspring
The correct order of these events is

Accepted Answer

A)  I, III, II, IV. 
B)  II, III, I, IV. 
C)  IV, I, III, II. 
D)  II, I, III, IV. 
E)  I, II, IV, III. 
A)  I, III, II, IV. 
B)  II, III, I, IV. 
C)  IV, I, III, II. 
D)  II, I, III, IV. 
E)  I, II, IV, III.

Question 3

A ________ is used in industrial microbiology to produce microbial products that are only synthesized during log phase growth.

Accepted Answer

A)  Coulter counter 
B)  broth culture 
C)  spectrophotometer 
D)  pour plate 
E)  chemostat 
A)  Coulter counter 
B)  broth culture 
C)  spectrophotometer 
D)  pour plate 
E)  chemostat

Question 4

All of the following are used to protect organisms from the toxic by-products of oxygen EXCEPT

Accepted Answer

A)  carotenoids. 
B)  superoxide dismutase. 
C)  peroxidase. 
D)  protease. 
E)  catalase. 
A)  carotenoids. 
B)  superoxide dismutase. 
C)  peroxidase. 
D)  protease. 
E)  catalase.

Question 5

A fastidious organism might be grown on which of the following types of media?

Accepted Answer

A)  transport media 
B)  reducing media 
C)  enriched media 
D)  differential media 
E)  selective media 
A)  transport media 
B)  reducing media 
C)  enriched media 
D)  differential media 
E)  selective media

Question 6

Rates of cell production and cell death are approximately equal during the ________ phase of growth.

Accepted Answer

A)  lag 
B)  log 
C)  death 
D)  stationary 
E)  intermediate 
A)  lag 
B)  log 
C)  death 
D)  stationary 
E)  intermediate

Question 7

An organism that produces catalase enzyme is protected from the harmful effects of

Accepted Answer

A)  singlet oxygen (1O2). 
B)  hydroxyl radical (HO.). 
C)  peroxide anion (O22-). 
D)  superoxide radical (O2-). 
E)  molecular oxygen (O2). 
A)  singlet oxygen (1O2). 
B)  hydroxyl radical (HO.). 
C)  peroxide anion (O22-). 
D)  superoxide radical (O2-). 
E)  molecular oxygen (O2).

Question 8

Organisms that require organic sources of carbon and energy are called (chemoheterotrophs/chemoautotrophs/autotrophs).

Accepted Answer

The answer of Organisms that require organic sources of carbon...

Question 9

The growth of bacterial cultures is best described as

Accepted Answer

A)  arithmetic growth. 
B)  lag growth. 
C)  logarithmic growth. 
D)  cell division. 
E)  replication. 
A)  arithmetic growth. 
B)  lag growth. 
C)  logarithmic growth. 
D)  cell division. 
E)  replication.

Question 10

The (maximum/optimum/selective)growth temperature is the temperature at which an organism exhibits the highest growth rate.

Accepted Answer

The answer of The (maximum/optimum/selective)growth temperature is the temperature at...

Question 11

During which growth phase are bacteria more susceptible to antimicrobial drugs?

Accepted Answer

A)  lag phase 
B)  log phase 
C)  stationary phase 
D)  death phase 
E)  The susceptibility is the same for all phases. 
A)  lag phase 
B)  log phase 
C)  stationary phase 
D)  death phase 
E)  The susceptibility is the same for all phases.

Question 12

Obligate anaerobes may be cultured in the laboratory

Accepted Answer

A)  in a reducing medium. 
B)  in a standard incubator. 
C)  in standard Petri plates. 
D)  on blood agar plates. 
E)  in standard complex media. 
A)  in a reducing medium. 
B)  in a standard incubator. 
C)  in standard Petri plates. 
D)  on blood agar plates. 
E)  in standard complex media.

Question 13

An epidemiologist is investigating a new disease and observes what appear to be bacteria inside tissue cells in clinical samples from victims.The scientist wants to try to isolate the bacteria in the lab.What culture conditions are most likely to be successful?

Accepted Answer

A)  culturing on blood agar plates 
B)  inoculation of EMB plates 
C)  incubation in an anaerobic culture system 
D)  inoculation of cell cultures 
E)  inoculation of a minimal medium broth 
A)  culturing on blood agar plates 
B)  inoculation of EMB plates 
C)  incubation in an anaerobic culture system 
D)  inoculation of cell cultures 
E)  inoculation of a minimal medium broth

Question 14

Organisms that can grow with or without oxygen present are

Accepted Answer

A)  obligate aerobes. 
B)  facultative anaerobes. 
C)  aerotolerant anaerobes. 
D)  obligate anaerobes. 
E)  either facultative anaerobes or aerotolerant anaerobes. 
A)  obligate aerobes. 
B)  facultative anaerobes. 
C)  aerotolerant anaerobes. 
D)  obligate anaerobes. 
E)  either facultative anaerobes or aerotolerant anaerobes.

Question 15

Culturing of intracellular parasites generally requires (enrichment/cell culture/low oxygen)conditions.

Accepted Answer

The answer of Culturing of intracellular parasites generally requires (enrichment/cell...

Exam 6: Microbial Nutrition and Growth

An aquatic microbe that can grow only near the surface of the water is probably which of the following?

The events of binary fission are I.the cell doubles in size II.the DNA is replicated III.the cell forms a septum IV.the cell separates from its offspring The correct order of these events is

A ________ is used in industrial microbiology to produce microbial products that are only synthesized during log phase growth.

All of the following are used to protect organisms from the toxic by-products of oxygen EXCEPT

A fastidious organism might be grown on which of the following types of media?

Rates of cell production and cell death are approximately equal during the ________ phase of growth.

An organism that produces catalase enzyme is protected from the harmful effects of

Organisms that require organic sources of carbon and energy are called (chemoheterotrophs/chemoautotrophs/autotrophs).

The growth of bacterial cultures is best described as

The (maximum/optimum/selective)growth temperature is the temperature at which an organism exhibits the highest growth rate.

During which growth phase are bacteria more susceptible to antimicrobial drugs?

Obligate anaerobes may be cultured in the laboratory

An epidemiologist is investigating a new disease and observes what appear to be bacteria inside tissue cells in clinical samples from victims.The scientist wants to try to isolate the bacteria in the lab.What culture conditions are most likely to be successful?

Organisms that can grow with or without oxygen present are

Culturing of intracellular parasites generally requires (enrichment/cell culture/low oxygen)conditions.

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

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

Applied and Environmental Microbiology

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