Question 1

Which scientiﬁc ﬁeld is involved in the identiﬁcation, classiﬁcation, and naming of organisms?

Accepted Answer

A)   Pathology
B)   Taxonomy
C)   Epidemiology
D)   Nomenclature
E)   PhylogenyF) A) and B)
G) A) and C)

Question 2

Which activity is an example of biotechnology?

Accepted Answer

A)   Egyptians using moldy bread on wounds
B)   Bacteria in the soil secreting an antibiotic to kill competitors
C)   Public health o?cials monitoring diseases in a community
D)   A microbiologist using the microscope to view bacteria
E)   Escherichia coli producing human insulinF) A) and C)
G) C) and E)

Question 3

In the experiments constructed by Pasteur to disprove spontaneous generation, swan-necked ﬂasks were used. Why was this shape of ﬂask used in this experiment?

Accepted Answer

A)   Because the glass necks were stretched out, the heat used to sterilize the medium inside of the ﬂask could not kill the bacteria in the neck.
B)   The shape of the glass neck allowed the bacteria into the ﬂask and then into the media, but air could not enter.
C)   These ﬂask shapes were the easiest and cheapest to produce.
D)   The glass necks needed to be open to the air, yet constructed so that bacteria would settle in the lowest part of the neck.E) B) and C)
F) A) and B)

Question 4

Which of the following pairs of career descriptions and work tasks is not correctly matched?

Accepted Answer

A)   Industrial microbiologist -- manipulate bacterial strains to be less pathogenic
B)   Medical microbiologist -- identify the cause of a bladder infection at a hospital lab
C)   Public health microbiologist -- track the incidence of AIDS in a population
D)   Agricultural microbiologist -- identify bacterial causes of crop diseaseE) A) and B)
F) B) and C)

Question 5

Which of the following historical microbiologists is incorrectly paired with his contribution to the science?

Accepted Answer

A)   Joseph Lister: promoted disinfecting hands and air prior to surgery
B)   Francesco Redi: tested spontaneous generation with meat exposed to the air or covered with cloth
C)   Antonie van Leeuwenhoek: made and used quality magnifying lenses to observe and record microorganisms
D)   Louis Pasteur: demonstrated that anthrax was caused by a bacteriumE) A) and B)
F) A) and C)

Question 6

Studies of the immune response to an infection caused by microorganisms would be performed by a/an _______.

Accepted Answer

A)   immunologist
B)   epidemiologist
C)   hypersensitivity specialist
D)   geomicrobiologistE) A) and D)
F) A) and C)

Question 7

Trees of life that illustrate the phylogenetic relationships of all organisms were traditionally based on ______; newer methods for determining phylogeny rely on ______.

Accepted Answer

A)   nucleic acid sequences; morphology
B)   nucleic acid sequences; microbiomes
C)   morphology; nutritional requirements
D)   morphology; virology
E)   morphology; nucleic acid sequencesF) B) and C)
G) B) and D)

Question 8

The sum total of all the microbes in a certain environment is termed the ______.

Accepted Answer

A)   microbial niche
B)   domain
C)   bioﬁlm
D)   phylogeny
E)   microbiomeF) All of the above
G) B) and C)

Question 9

In which way are bacteria and eukaryotes the same?

Accepted Answer

A)   Contain membrane-bound organelles
B)   Contain a nucleus to hold DNA
C)   Possess a cell membrane
D)   Always have a cell wall for rigidityE) None of the above
F) A) and B)

Question 10

Which area of biology states that living things undergo gradual structural and functional changes over long periods of time?

Accepted Answer

A)   Phylogeny
B)   Evolution
C)   Genetics
D)   Morphology
E)   TransformationF) B) and D)
G) C) and D)

Question 11

Caring for patients infected with a new virus requires safety precautions for medical personnel. Choosing appropriate procedures is an example of a/an ______ process.

Accepted Answer

A)   pathogenic
B)   deductive
C)   hypothetical
D)   inductiveE) B) and C)
F) A) and D)

Question 12

Which of the following is NOT a recent discovery that has had a huge impact on the understanding of microbiology?

Accepted Answer

A)   Restriction enzymes
B)   PCR technique
C)   Human microbiome project
D)   Small RNAs
E)   All are signiﬁcant discoveries. Refer to the text and read about the recent discoveries that have had a huge impact on theF) None of the above
G) B) and C)

Question 13

Microorganisms are best deﬁned as organisms that _______.

Accepted Answer

A)   cause human disease
B)   are too small to be seen with the unaided eye
C)   are infectious particles
D)   can only be found growing in laboratories
E)   lack a cell nucleusF) B) and D)
G) A) and B)

Question 14

Which of the following is not a process in the scientiﬁc method?

Accepted Answer

A)   Development of a theory
B)   Systematic observation
C)   Formulation of a hypothesis
D)   Belief in a preconceived idea
E)   Laboratory experimentationF) A) and B)
G) None of the above

Question 15

Many chronic medical conditions have been found to be associated with microbial agents.

Accepted Answer

A) True 
 B)False

Question 16

When humans manipulate the genes of microorganisms, the process is called ______.

Accepted Answer

A)   bioremediation
B)   taxonomy
C)   epidemiology
D)   genetic engineering
E)   immunologyF) B) and E)
G) A) and B)

Question 17

Which of the following is a scienti?c name?

Accepted Answer

A)   Anthrax
B)   Streptobacilli
C)   Streptococcus pyogenes
D)   Gram-positive streptococcusE) C) and D)
F) B) and C)

Question 18

Astrobiology is considered a sub-discipline of microbiology because _______.

Accepted Answer

A)   all extraterrestrials known are microbial
B)   life elsewhere in the universe is likely to be microbial
C)   only microbes can reproduce under the extreme conditions in outer space
D)   microbes are known to exist on other planetsE) None of the above
F) All of the above

Question 19

Select the correct descending taxonomic hierarchy (left to right) .

Accepted Answer

A)   Kingdom, domain, phylum
B)   Family, genus, species
C)   Genus, species, family
D)   Class, phylum, order
E)   Family, order, classF) A) and B)
G) A) and C)

Question 20

Koch's postulates are criteria used to establish that ______.

Accepted Answer

A)   a speciﬁc microbe is the cause of a speciﬁc disease
B)   microbes are found on dust particles
C)   microbes can be used to clean up toxic spills
D)   life forms can only arise from preexisting life forms
E)   a speciﬁc microbe should be classiﬁed in a speciﬁc kingdomF) None of the above
G) A) and C)

Exam 1: The Main Themes of Microbiology

Which of the following pairs of career descriptions and work tasks is not correctly matched?

Correct AnswerverifiedShow Answer

The sum total of all the microbes in a certain environment is termed the ______.

Correct AnswerverifiedShow Answer

In the experiments constructed by Pasteur to disprove spontaneous generation, swan-necked ﬂasks were used. Why was this shape of ﬂask used in this experiment?

Correct AnswerverifiedShow Answer

Which activity is an example of biotechnology?

Correct AnswerverifiedShow Answer

Which of the following is NOT a recent discovery that has had a huge impact on the understanding of microbiology?

Correct AnswerverifiedShow Answer

Which of the following is not a process in the scientiﬁc method?

Correct AnswerverifiedShow Answer

Koch's postulates are criteria used to establish that ______.

Correct AnswerverifiedShow Answer

Caring for patients infected with a new virus requires safety precautions for medical personnel. Choosing appropriate procedures is an example of a/an ______ process.

Correct AnswerverifiedShow Answer

Trees of life that illustrate the phylogenetic relationships of all organisms were traditionally based on ______; newer methods for determining phylogeny rely on ______.

Correct AnswerverifiedShow Answer

Studies of the immune response to an infection caused by microorganisms would be performed by a/an _______.

Correct AnswerverifiedShow Answer

Select the correct descending taxonomic hierarchy (left to right) .

Correct AnswerverifiedShow Answer

Which of the following is a scienti?c name?

Correct AnswerverifiedShow Answer

Which of the following historical microbiologists is incorrectly paired with his contribution to the science?

Correct AnswerverifiedShow Answer

Microorganisms are best deﬁned as organisms that _______.

Correct AnswerverifiedShow Answer

Which area of biology states that living things undergo gradual structural and functional changes over long periods of time?

Correct AnswerverifiedShow Answer

Astrobiology is considered a sub-discipline of microbiology because _______.

Correct AnswerverifiedShow Answer

In which way are bacteria and eukaryotes the same?

Correct AnswerverifiedShow Answer

When humans manipulate the genes of microorganisms, the process is called ______.

Correct AnswerverifiedShow Answer

Which scientiﬁc ﬁeld is involved in the identiﬁcation, classiﬁcation, and naming of organisms?

Correct AnswerverifiedShow Answer

Many chronic medical conditions have been found to be associated with microbial agents.

Correct AnswerverifiedShow Answer

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Trees of life that illustrate the phylogenetic relationships of all organisms were traditionally based on ; newer methods for determining phylogeny rely on .

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