TEST BANK FOR OPEXSTAX MICROBIOLOGY
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QUESTIONSANDSOLUTIONS.ALLCHAPTERS T T T T
INCLUDED
Chapter 1: An Invisible World
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* = Correct answer
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Multiple Choice T
1. Yeasts are which of the following?
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A. a type of algae
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B. a type of protist
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C. any unicellular microbe T T
D. unicellular fungi* T
Difficulty: Moderate ASM T T T
Standard: 20 T
3. The cell walls of archaeans often contain which of the following substances?
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A. cellulose
B. chitin
C. peptidoglycan
D. pseudopeptidoglycan* T
ASM Standard: 20 T T
4. Which of the following is not true of archaeans? A. Some species live on the human body.
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B. They are genetically distinct from bacteria.
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C. They are only found in extreme environments.*
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D. They have substantial metabolic differences from bacteria.
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Difficulty: Difficult ASM T T T
Standard: 20 T
Page/ 1/ of/ 17
,Which of the following is not true about the process of
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fermentation? A. It can help preserve foods, preventing T T T T T T T T
spoilage.
B. It converts sugars to organic acids, alcohols, and/or gases such as carbon dioxide.
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C. It is carried out exclusively by unicellular eukaryotes such as yeast.*
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D. It is used to make foods such as cheese and bread.
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Difficulty: Moderate T T
ASM Standard: 11, 23, 26T T T T
5. The Romans may have reduced their risk of waterborne infectious diseases by using which
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of the following?
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A. a variety of pharmaceutical products
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B. aqueducts and a sewer system* T T T T
C. prophylactic antibiotics T
D. quarantine of people with leprosy T T T T T
Difficulty: Moderate T
ASM Standard: 23 T T
6. For which of the following is Thucydides known?
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A. developing an effective sewer system in ancient Greece, helping to reduce levels of
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disease in cities T T
B. observing microbes, using a microscope, for the first time, even distinguishing between
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bacteria and fungi T T
C. proposing that disease was caused by microorganisms T T T T T T
D. realizing that people who had been infected by the Athenian plague had immunity to
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reinfection*
Difficulty: Moderate T T
ASM Standard: 23, 31 T T T
7. Ernst Haeckel proposed a classification system consisting of which of the following
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subgroups? A. five kingdoms T T T
B. four kingdoms*
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C. two domains and three kingdoms
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D. two domains and five kingdoms
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Difficulty: Moderate ASM T T T
Standard: N/A T
Page/ 2/ of/ 17
,8. Viruses not included in phylogenetic trees for which of the following reasons? A. It is too
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difficult to observe their characteristics.
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B. They are acellular and nonliving.*
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C. They do not have any genes, which prevents genetic analysis.
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D. They lack a nucleus.
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Difficulty: Moderate ASM T T T
Standard: 5 T
9. Which is the best description of the primary purpose of a phylogeny? A. Phylogenies show
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all the alterative names for each species.
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B. Phylogenies show all the common names for each species.
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C. Phylogenies show evolutionary relatedness between organisms.*
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D. Phylogenies show interactions between species in a shared habitat.
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Difficulty: Moderate ASM T T T
Standard: 5 T
10. Current phylogenetic analyses include which of the following?
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A. information from a range of sources, including morphological, genetic, and biochemical
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data*
B. information on visible similarities only T T T T
C. information regarding how to classify organisms on the basis of external morphological
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characteristics and visible behaviors T T T
D. varied morphological and structural characteristics, with preference for leaving historical
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classifications to prevent confusion T T T
Difficulty: Moderate ASM T T T
Standard: 5 T
11. Diatoms are classified within which of the following domains?
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A. Archaea
B. Bacteria
C. Eukarya*
D. Prokaryota
Difficulty: Moderate ASM T T T
Standard: N/A T
12. Horizontal gene transfer involves which of the following?
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A. any transfer of genes in a laboratory setting
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Page/ 3/ of/ 17
, B. the transfer of genes from a virus to a bacterium or vice versa but not any other form of
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gene transfer T
C. the transfer of genes from one individual to another, including from one species to
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another, but not from parent to offspring* D. the transfer of genes from parent to
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offspring
Difficulty: Moderate T T
ASM Standard: 2, 4 T T T
13. Bacteria are generally identified to species by using which of the following?
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A. a combination of genetic, biochemical, and microscopic approaches*
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B. a combination of microscopic and physiological approaches, but not genetics
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C. primarily characteristics such as motility that can be visualized using microscopy
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D. primarily morphological characteristics of individual cells
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Difficulty: Moderate T T
ASM Standard: 34, 36
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14. For taxonomic classification of microbes, serological tests typically are used to do which of
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the following?
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A. determine complete genome sequences for microbes T T T T T
B. identify proteins on the basis of their reaction with specific antibodies*
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C. run analyses to identify whether particular genes are present
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D. visualize microbial external morphology T T T
Difficulty: Moderate T T
ASM Standard: 34, 36
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Which of the following is true of the microbial world? A. All
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microbes are harmful. T T
B. Humans could survive without microbes.
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C. Many microbes are helpful.*D. Most microbes are
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pathogenic.
Difficulty: Easy T
ASM Standard: 23, 24
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15. Which of the following is when humans first suspected the existence of microbes?
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A. during the Industrial Revolution T T T
B. in prehistoric times*
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C. in the last century
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Page/ 4/ of/ 17
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QUESTIONSANDSOLUTIONS.ALLCHAPTERS T T T T
INCLUDED
Chapter 1: An Invisible World
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* = Correct answer
T T T T
Multiple Choice T
1. Yeasts are which of the following?
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A. a type of algae
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B. a type of protist
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C. any unicellular microbe T T
D. unicellular fungi* T
Difficulty: Moderate ASM T T T
Standard: 20 T
3. The cell walls of archaeans often contain which of the following substances?
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A. cellulose
B. chitin
C. peptidoglycan
D. pseudopeptidoglycan* T
ASM Standard: 20 T T
4. Which of the following is not true of archaeans? A. Some species live on the human body.
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B. They are genetically distinct from bacteria.
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C. They are only found in extreme environments.*
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D. They have substantial metabolic differences from bacteria.
T T T T T T T
Difficulty: Difficult ASM T T T
Standard: 20 T
Page/ 1/ of/ 17
,Which of the following is not true about the process of
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fermentation? A. It can help preserve foods, preventing T T T T T T T T
spoilage.
B. It converts sugars to organic acids, alcohols, and/or gases such as carbon dioxide.
T T T T T T T T T T T T T
C. It is carried out exclusively by unicellular eukaryotes such as yeast.*
T T T T T T T T T T T
D. It is used to make foods such as cheese and bread.
T T T T T T T T T T T
Difficulty: Moderate T T
ASM Standard: 11, 23, 26T T T T
5. The Romans may have reduced their risk of waterborne infectious diseases by using which
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of the following?
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A. a variety of pharmaceutical products
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B. aqueducts and a sewer system* T T T T
C. prophylactic antibiotics T
D. quarantine of people with leprosy T T T T T
Difficulty: Moderate T
ASM Standard: 23 T T
6. For which of the following is Thucydides known?
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A. developing an effective sewer system in ancient Greece, helping to reduce levels of
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disease in cities T T
B. observing microbes, using a microscope, for the first time, even distinguishing between
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bacteria and fungi T T
C. proposing that disease was caused by microorganisms T T T T T T
D. realizing that people who had been infected by the Athenian plague had immunity to
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reinfection*
Difficulty: Moderate T T
ASM Standard: 23, 31 T T T
7. Ernst Haeckel proposed a classification system consisting of which of the following
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subgroups? A. five kingdoms T T T
B. four kingdoms*
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C. two domains and three kingdoms
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D. two domains and five kingdoms
T T T T T
Difficulty: Moderate ASM T T T
Standard: N/A T
Page/ 2/ of/ 17
,8. Viruses not included in phylogenetic trees for which of the following reasons? A. It is too
T T T T T T T T T T T T T T T T
difficult to observe their characteristics.
T T T T
B. They are acellular and nonliving.*
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C. They do not have any genes, which prevents genetic analysis.
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D. They lack a nucleus.
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Difficulty: Moderate ASM T T T
Standard: 5 T
9. Which is the best description of the primary purpose of a phylogeny? A. Phylogenies show
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all the alterative names for each species.
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B. Phylogenies show all the common names for each species.
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C. Phylogenies show evolutionary relatedness between organisms.*
T T T T T T
D. Phylogenies show interactions between species in a shared habitat.
T T T T T T T T T
Difficulty: Moderate ASM T T T
Standard: 5 T
10. Current phylogenetic analyses include which of the following?
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A. information from a range of sources, including morphological, genetic, and biochemical
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data*
B. information on visible similarities only T T T T
C. information regarding how to classify organisms on the basis of external morphological
T T T T T T T T T T T T
characteristics and visible behaviors T T T
D. varied morphological and structural characteristics, with preference for leaving historical
T T T T T T T T T T
classifications to prevent confusion T T T
Difficulty: Moderate ASM T T T
Standard: 5 T
11. Diatoms are classified within which of the following domains?
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A. Archaea
B. Bacteria
C. Eukarya*
D. Prokaryota
Difficulty: Moderate ASM T T T
Standard: N/A T
12. Horizontal gene transfer involves which of the following?
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A. any transfer of genes in a laboratory setting
T T T T T T T
Page/ 3/ of/ 17
, B. the transfer of genes from a virus to a bacterium or vice versa but not any other form of
T T T T T T T T T T T T T T T T T T T
gene transfer T
C. the transfer of genes from one individual to another, including from one species to
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another, but not from parent to offspring* D. the transfer of genes from parent to
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offspring
Difficulty: Moderate T T
ASM Standard: 2, 4 T T T
13. Bacteria are generally identified to species by using which of the following?
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A. a combination of genetic, biochemical, and microscopic approaches*
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B. a combination of microscopic and physiological approaches, but not genetics
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C. primarily characteristics such as motility that can be visualized using microscopy
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D. primarily morphological characteristics of individual cells
T T T T T
Difficulty: Moderate T T
ASM Standard: 34, 36
T T T
14. For taxonomic classification of microbes, serological tests typically are used to do which of
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the following?
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A. determine complete genome sequences for microbes T T T T T
B. identify proteins on the basis of their reaction with specific antibodies*
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C. run analyses to identify whether particular genes are present
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D. visualize microbial external morphology T T T
Difficulty: Moderate T T
ASM Standard: 34, 36
T T T
Which of the following is true of the microbial world? A. All
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microbes are harmful. T T
B. Humans could survive without microbes.
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C. Many microbes are helpful.*D. Most microbes are
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pathogenic.
Difficulty: Easy T
ASM Standard: 23, 24
T T T
15. Which of the following is when humans first suspected the existence of microbes?
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A. during the Industrial Revolution T T T
B. in prehistoric times*
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C. in the last century
T T T
Page/ 4/ of/ 17
