Question 1

Disease-causing microorganisms are called ______.

Accepted Answer

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

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) C) and D)
F) A) and D)

Question 3

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) C) and D)
G) B) and D)

Question 4

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 D)
G) All of the above

Question 5

The smallest and most significant taxon is a ______.

Accepted Answer

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

Question 6

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 7

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) C) and D)

Question 8

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) B) and D)
F) None of the above

Question 9

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

Question 10

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

Question 11

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 B)
G) A) and C)

Question 12

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

Question 13

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 14

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) B) and D)

Question 15

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) A) and C)
F) C) and D)

Question 16

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 D)
G) D) and E)

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is a scientific name?

Accepted Answer

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

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

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)

Exam 1: The Main Themes of Microbiology

Experimentation

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The study of evolutionary relationships among organisms is called ______.

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The scientific method includes all of the following except ______.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which activity is an example of biotechnology?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In which way are archaea and eukaryotes the same?

Correct AnswerverifiedShow Answer

The smallest and most significant taxon is a ______.

Correct AnswerverifiedShow Answer

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

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Which of the following is a scientific name?

Correct AnswerverifiedShow Answer

Astrobiology is considered a sub-discipline of microbiology because

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Disease-causing microorganisms are called ______.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

When assigning a scientific name to an organism,

Correct AnswerverifiedShow Answer

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

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

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

Correct AnswerverifiedShow Answer

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

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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