Question 1

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

Accepted Answer

A)   microbiome
B)   microbial niche
C)   domain
D)   biofilm
E)   phylogenyF) B) and E)
G) D) and E)

Question 2

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

Accepted Answer

A)   Medical microbiologist -- identify the cause of a bladder infection at a hospital lab
B)   Industrial microbiologist -- manipulate bacterial strains to be less pathogenic
C)   Agricultural microbiologist -- identify bacterial causes of crop disease
D)   Public health microbiologist -- track the incidence of AIDS in a populationE) B) and D)
F) None of the above

Question 3

A hypothesis must be tested many times before it can be considered a theory.

Accepted Answer

A) True 
 B)False

Question 4

The smallest and most significant taxon is a ______.

Accepted Answer

A)   kingdom
B)   phylum
C)   species
D)   family
E)   genusF) B) and D)
G) C) and D)

Question 5

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) A) and E)
G) A) and D)

Question 6

The scientific method includes all of the following except ______.

Accepted Answer

A)   experimentation
B)   hypothesis
C)   publication
D)   observationE) A) and B)
F) A) and C)

Question 7

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) A) and B)
G) B) and D)

Question 8

Disease-causing microorganisms are called ______.

Accepted Answer

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

Question 9

The scientific method involves formulating a tentative explanation,called the hypothesis,to account for what has been observed or measured.

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A)   Systematic observation
B)   Development of a theory
C)   Laboratory experimentation
D)   Formulation of a hypothesis
E)   Belief in a preconceived ideaF) C) and D)
G) A) and B)

Question 11

In which way are archaea and eukaryotes the same?

Accepted Answer

A)   Have a cell wall for rigidity
B)   Can use flagella for movement
C)   Contain mitochondria for energy production
D)   Contain membrane-bound organellesE) A) and B)
F) C) and D)

Question 12

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) A) and C)
G) None of the above

Question 13

The majority of oxygen in earth's atmosphere is a product of photosynthesis by ______.

Accepted Answer

A)   rain forests
B)   microorganisms
C)   green plants
D)   agricultural landsE) All of the above
F) A) and B)

Question 14

The study of evolutionary relationships among organisms is called ______.

Accepted Answer

A)   genetics
B)   biotechnology
C)   phylogeny
D)   taxonomy
E)   recombinant DNAF) B) and D)
G) C) and D)

Question 15

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 D)

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is a scientific name?

Accepted Answer

A)   Streptobacilli
B)   Gram-positive streptococcus
C)   Anthrax
D)   Streptococcus pyogenesE) All of the above
F) C) and D)

Question 18

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) C) and E)
G) B) and C)

Question 19

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) None of the above
F) All of the above

Question 20

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 B)
G) None of the above

Exam 1: The Main Themes of Microbiology

Astrobiology is considered a sub-discipline of microbiology because

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Experimentation

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In which way are archaea and eukaryotes the same?

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

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Which of the following is a scientific name?

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The scientific method involves formulating a tentative explanation,called the hypothesis,to account for what has been observed or measured.

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

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The smallest and most significant taxon is a ______.

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

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Disease-causing microorganisms are called ______.

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Which activity is an example of biotechnology?

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The scientific method includes all of the following except ______.

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

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

Correct AnswerverifiedShow Answer

The study of evolutionary relationships among organisms is called ______.

Correct AnswerverifiedShow Answer

The majority of oxygen in earth's atmosphere is a product of photosynthesis by ______.

Correct AnswerverifiedShow Answer

When assigning a scientific name to an organism,

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A hypothesis must be tested many times before it can be considered a theory.

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

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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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