OPENSTAX MICROBIOLOGY TEST BANK OSX

OPENSTAX MICROBIOLOGY TEST BANK / OSX

MICROBIOLOGY TEST BANK 2025/ALL CHAPTERS 1 -

26

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CHapter 1: An Invisible World

• = Right ANS

Multiple Choice

• Which of the following is true of the microbial world?
• All microbes are harmful.
• Humans could survive without microbes.
• Many microbes are helpful.*
• Most microbes are pathogenic.

DIFF: Easy

ASM Standard: 23, 24

• Which of the following is when humans first suspected the existence of microbes?
• during the Industrial Revolution
• in prehistoric times*
• in the last century
• within the last 500 years

DIFF: Easy ASM

Standard: 23

• Which individual first observed unicellular organisms, which he called

“animalcules,” using a microscope he developed?

• Robert Koch
• Louis Pasteur
• Thucydides
• Antonie van Leeuwenhoek*

DIFF: Easy ASM

Standard: 6

• To reduce the risk of open flame from Bunsen burners, microbiologists are

increasingly using which of the following devices for easy, rapid benchtop sterilization of small pieces of equipment?

• autoclaves
• ethylene oxide
• incubators
• microincinerators*

DIFF: Easy ASM

Standard: 36 2 / 4

• The Swedish botanist known for having developed an important biological

classification system is which of the following people?

• Ernst Haeckel
• Carolus Linnaeus*
• Louis Pasteur
• Robert Whittaker

DIFF: Easy ASM

Standard: N/A

• Which kingdom was the only one found in Empire Prokaryota?
• Animalia
• Fungi
• Monera*
• Protista

DIFF: Easy ASM

Standard: N/A

• Which are the three currently accepted domains?
• Archaea, Bacteria, and Eukarya*
• Archaea, Prokaryota, and Eukaryota
• Bacteria, Fungi, and Protista
• Bacteria, Prokaryota, and Eukarya

DIFF: Easy

ASM Standard: N/A

• Which two taxonomic units are typically used to identify an organism when using

binomial nomenclature?

• domain and kingdom
• genus and family
• genus and species*
• phylum and class

DIFF: Easy

ASM Standard: N/A

• Which of the following is not true about the process of fermentation?
• It can help preserve foods, preventing spoilage.
• It converts sugars to organic acids, alcohols, and/or gases such as carbon dioxide.
• It is carried out exclusively by unicellular eukaryotes such as yeast.*
• It is used to make foods such as cheese and bread.

DIFF: Moderate

ASM Standard: 11, 23, 26 3 / 4

• The Romans may have reduced their risk of waterborne infectious diseases by using

which of the following?

• a variety of pharmaceutical products
• aqueducts and a sewer system*
• prophylactic antibiotics
• quarantine of people with leprosy

DIFF: Moderate

ASM Standard: 23

• For which of the following is Thucydides known?
• developing an effective sewer system in ancient Greece, helping to reduce

levels of disease in cities

• observing microbes, using a microscope, for the first time, even distinguishing

between bacteria and fungi

• proposing that disease was caused by microorganisms
• realizing that people who had been infected by the Athenian

plague had immunity to reinfection*

DIFF: Moderate ASM

Standard: 23, 31

• Ernst Haeckel proposed a classification system consisting of which of the

following subgroups?

• five kingdoms
• four kingdoms*
• two domains and three kingdoms
• two domains and five kingdoms

DIFF: Moderate

ASM Standard: N/A

• Viruses not included in phylogenetic trees for which of the following reasons?
• It is too difficult to observe their characteristics.
• They are acellular and nonliving.*
• They do not have any genes, which prevents genetic analysis.
• They lack a nucleus.

DIFF: Moderate

ASM Standard: 5

• Which is the best description of the primary purpose of a phylogeny?
• Phylogenies show all the alterative names for each species.
• Phylogenies show all the common names for each species.
• Phylogenies show evolutionary relatedness between organisms.*
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