Test Bank - Brock Biology of Microorganisms 15th Edition by Michael Madigan.

Brock Biology of Microorganisms, 15e (Madigan et al.)
Chapter 1 The Microbial World

1.1 Multiple Choice Questions

1) Which of the following statements is FALSE?
A) Microbial cells can exist as single cells.
B) Microbial cells carry out their life processes of growth independently.
C) Microbial cells include both bacteria and viruses.
D) Microbial cells are surrounded by a plasma membrane.
Answer: C
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.14

2) Which of the following statements is correct?
A) Microorganisms are significant contributors to the total biomass on Earth.
B) Microorganisms represent a much smaller amount of Earth's biomass than plants.
C) Microorganisms represent a much smaller amount of Earth's biomass than animals.
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D) Microorganisms are significant in number, but not in overall biomass.
Answer: A
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.1
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3) Differential selection and reproduction of phenotypes occurs during a process called
A) cellular differentiation.
B) evolution.
C) growth.
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D) transformation.
Answer: B
Bloom’s Taxonomy: 1-2: Remembering/Understanding
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Chapter Section: 1.2

4) In what/which domain(s) of life is/are microorganisms represented?
A) Archaea
B) Bacteria
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C) Eukarya
D) Archaea, Bacteria, and Eukarya
Answer: D
Bloom’s Taxonomy: 1-2: Remembering/Understanding
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Chapter Section: 1.3
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,5) Biological catalysts involved in the acceleration of the rate of chemical reactions are called
A) catalytic converters.
B) growth agents.
C) evolutionary molecules.
D) enzymes.
Answer: D
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.2

6) Regarding early life on Earth
A) microbial life existed for billions of years before plant and animal life.
B) microbial life existed long before animals but has been around for about the same amount of
time as plants.
C) microbial life, plant life, and animal life all appeared at about the same time.
D) it is impossible to determine which type of life first appeared.
Answer: A
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.3
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7) The person who described the "wee animalcules" was
A) Robert Hooke.
B) Antoni van Leeuwenhoek.
C) Louis Pasteur.
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D) Ferdinand Cohn.
Answer: B
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.5
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8) Walther Hesse and ________ pioneered the use of agar as a solidifying agent.
A) Louis Pasteur
B) Ferdinand Cohn
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C) Robert Koch
D) Sergei Winogradsky
Answer: C
Bloom’s Taxonomy: 1-2: Remembering/Understanding
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Chapter Section: 1.10

9) Which of the following is/are characteristic of all cellular organisms?
A) communication
B) evolution
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C) motility
D) communication, evolution, and motility
Answer: B
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.2
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,10) Deduce why viruses are excluded from the ribosomal RNA—based tree of life.
A) Some viruses contain multiple strands of RNA.
B) Their genetic elements cannot be sequenced.
C) They can infect other organisms, which complicates the genetic comparisons.
D) They lack ribosomal RNA (rRNA).
Answer: D
Bloom’s Taxonomy: 5-6: Evaluating/Creating
Chapter Section: 1.13

11) Louis Pasteur developed the vaccine(s) for
A) anthrax only.
B) fowl cholera only.
C) rabies only.
D) anthrax, fowl cholera, and rabies.
Answer: D
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.9
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12) The discovery of antibiotics and other important chemicals led to the field of
A) industrial microbiology.
B) agricultural microbiology.
C) marine microbiology.
D) aquatic microbiology.
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Answer: A
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.4
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13) Microbial sterilization is used to
A) decrease the possibility of contaminants growing in a culture.
B) kill bacteria but not necessarily viruses or other microbes.
C) kill all microbes in or on objects.
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D) clean a work area.
Answer: C
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.9
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14) Transparent double-sided dishes used for growing microbes are most commonly called
A) Petri dishes.
B) baker dishes.
C) sterilization plates.
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D) culture medium plates.
Answer: A
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.10
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, 15) Microbes playing a role in nitrogen fixation in plants live in ________, while those playing a
role in the digestive tract of certain herbivores live in ________.
A) rumens / nodules
B) nodules / rumens
C) nodules / fortrans
D) fortrans / rumens
Answer: B
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.4

16) Which of the following is NOT an accomplishment of Louis Pasteur?
A) determined that the alcohol-making process was mediated by microbial fermentation and thus
refuted the theory of spontaneous generation
B) developed enrichment culture techniques
C) developed heat sterilization techniques that involved the creation of a specialized swan-
necked flask
D) developed the first rabies vaccine and treated thousands of individuals
Answer: B
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Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.9

17) The theory of spontaneous generation was refuted by the work of
A) Louis Pasteur.
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B) Robert Koch.
C) Robert Hooke.
D) Antoni van Leeuwenhoek.
Answer: A
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Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.9

18) A Pasteur flask has a(n)
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A) swan neck to prevent particulate matter from getting into the main body of the flask.
B) double neck so two substances may be added at the same time.
C) secondary opening at the base to allow for drainage.
D) inverted upper edge to prevent spillage while swirling.
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Answer: A
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 1.9
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