Question 1

Experimentation

Accepted Answer

A)  is the first step in the scientific method.
B)  is designed to support an hypothesis.
C)  provides a means to gather objective data.
D)  is designed to refute an hypothesis.
E)  provides a means to gather subjective data.F) All of the above
G) A) and D)

Question 2

Which of the following is a unique characteristic of viruses that distinguishes them from the other major groups of microorganisms?

Accepted Answer

A)  Cannot be seen without a microscope
B)  Contain genetic material
C)  Cause human disease
D)  Lack a nucleus
E)  Lack cell structureF) None of the above
G) A) and B)

Question 3

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

Question 4

Microorganisms are best defined as organisms that

Accepted Answer

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

Question 5

Organisms called parasites are ______.

Accepted Answer

A)  the decomposers in ecosystems
B)  always viruses
C)  always harmful to their host
D)  free-livingE) B) and C)
F) None of the above

Question 6

Which scientific name is written correctly?

Accepted Answer

A)  S.aureus
B)  Staphylococcus aureus
C)  Staphylococcus Aureus
D)  .staphylococcus aureus
E)  Staphylococcus aureus.F) None of the above
G) B) and C)

Question 7

Taxonomy does not involve ______.

Accepted Answer

A)  classification
B)  a common name
C)  nomenclature
D)  identificationE) A) and B)
F) All of the above

Question 8

When assigning a scientific name to an organism,

Accepted Answer

A)  the species name is placed first.
B)  the species name can be abbreviated.
C)  both genus and species names are italicized or underlined.
D)  both genus and species names are capitalized.
E)  the species name is capitalized.F) A) and C)
G) B) and C)

Question 9

A scientist who studies the influence of microbes in the formation of caves is called a(n)  ______.

Accepted Answer

A)  astrobiologist
B)  epidemiologist
C)  geomicrobiologist
D)  immunologistE) C) and D)
F) All of the above

Question 10

Which activity is an example of biotechnology?

Accepted Answer

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

Question 11

Members of the same species share many more characteristics compared to those shared by members of the same kingdom.

Accepted Answer

A) True 
 B)False

Question 12

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

Accepted Answer

A)  pathogenic
B)  deductive
C)  hypothetical
D)  inductiveE) None of the above
F) B) and C)

Question 13

Analysis of the small subunit rRNAs from all organisms in the three current domains suggests that

Accepted Answer

A)  the prokarytoes, archaea, and eukaryotes are not related.
B)  the eukaryotes arose from prokaryotes.
C)  the Archaea are more closely related to bacteria than eukaryotes.
D)  all modern and extinct organisms on earth arose from a common ancestor.E) A) and B)
F) A) and C)

Question 14

Which of the following is a scientific name?

Accepted Answer

A)  Streptobacilli
B)  Gram-positive streptococcus
C)  Anthrax
D)  Streptococcus pyogenesE) C) and D)
F) A) and D)

Question 15

Disease-causing microorganisms are called ______.

Accepted Answer

A)  pathogens
B)  decomposers
C)  fermenters
D)  bacteria
E)  eukaryotesF) C) and D)
G) A) and C)

Question 16

Which group of microorganisms is composed only of hereditary material wrapped in a protein covering?

Accepted Answer

A)  Yeasts
B)  Parasites
C)  Viruses
D)  Fungi
E)  BacteriaF) None of the above
G) B) and C)

Question 17

The study of evolutionary relationships among organisms is called ______.

Accepted Answer

A)  genetics
B)  biotechnology
C)  phylogeny
D)  taxonomy
E)  recombinant DNAF) None of the above
G) A) and D)

Question 18

All bacteria and archaea are microorganisms, but only some eukaryotes are microorganisms.

Accepted Answer

A) True 
 B)False

Question 19

In which way are bacteria and eukaryotes the same?

Accepted Answer

A)  Contain a nucleus to hold DNA
B)  Contain ribosomes for protein synthesis
C)  Contain membrane-bound organelles
D)  Have a cell wall for rigidityE) A) and B)
F) A) and C)

Question 20

Astrobiology is considered a sub-discipline of microbiology because

Accepted Answer

A)  life elsewhere in the universe is likely to be microbial.
B)  microbes are known to exist on other planets.
C)  all extraterrestrials known are microbial.
D)  only microbes can reproduce under the extreme conditions in outer space.E) B) and D)
F) A) and B)

Exam 1: The Main Themes of Microbiology

Analysis of the small subunit rRNAs from all organisms in the three current domains suggests that

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Which of the following is a scientific name?

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Organisms called parasites are ______.

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Which activity is an example of biotechnology?

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Which scientific name is written correctly?

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A scientist who studies the influence of microbes in the formation of caves is called a(n) ______.

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Members of the same species share many more characteristics compared to those shared by members of the same kingdom.

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Experimentation

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Which of the following is a unique characteristic of viruses that distinguishes them from the other major groups of microorganisms?

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Which group of microorganisms is composed only of hereditary material wrapped in a protein covering?

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

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Microorganisms are best defined as organisms that

Correct AnswerverifiedShow Answer

Astrobiology is considered a sub-discipline of microbiology because

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Taxonomy does not involve ______.

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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 ______.

Correct AnswerverifiedShow Answer

Disease-causing microorganisms are called ______.

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When assigning a scientific name to an organism,

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In which way are bacteria and eukaryotes the same?

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All bacteria and archaea are microorganisms, but only some eukaryotes are microorganisms.

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The study of evolutionary relationships among organisms is called ______.

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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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