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Chapter 1: An Invisible World
* = Correct answer Multiple Choice
1. Which of the following is true of the microbial world?
A. All microbes are harmful.
B. Humans could survive without microbes.
C. Many microbes are helpful.*
D. Most microbes are pathogenic.
Difficulty: Easy
ASM Standard: 23, 24
2. Which of the following is when humans first suspected the existence of microbes?
A. during the Industrial Revolution
B. in prehistoric times*
C. in the last century
D. within the last 500 years
Difficulty: Easy ASM Standard: 23
3. Which individual first observed unicellular organisms, which he called “animalcules,” using a microscope he
developed?
A. Robert Koch
B. Louis Pasteur
C. Thucydides
D. Antonie van Leeuwenhoek*
Difficulty: Easy ASM Standard: 6
4. 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?
A. autoclaves
B. ethylene oxide
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C. incubators
D. microincinerators*
Difficulty: Easy ASM Standard: 36
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5. The Swedish botanist known for having developed an important biological classification system is which of
the following people?
A. Ernst Haeckel
B. Carolus Linnaeus*
C. Louis Pasteur
D. Robert Whittaker
Difficulty: Easy ASM Standard: N/A
6. Which kingdom was the only one found in Empire Prokaryota?
A. Animalia
B. Fungi
C. Monera*
D. Protista
Difficulty: Easy ASM Standard: N/A
7. Which are the three currently accepted domains?
A. Archaea, Bacteria, and Eukarya*
B. Archaea, Prokaryota, and Eukaryota
C. Bacteria, Fungi, and Protista
D. Bacteria, Prokaryota, and Eukarya
Difficulty: Easy ASM Standard: N/A
8. Which two taxonomic units are typically used to identify an organism when using binomial nomenclature?
A. domain and kingdom
B. genus and family
C. genus and species*
D. phylum and class
dr.j
,2|Page
Chapter 1: An Invisible World
* = Correct answer Multiple Choice
1. Which of the following is true of the microbial world?
A. All microbes are harmful.
B. Humans could survive without microbes.
C. Many microbes are helpful.*
D. Most microbes are pathogenic.
Difficulty: Easy
ASM Standard: 23, 24
2. Which of the following is when humans first suspected the existence of microbes?
A. during the Industrial Revolution
B. in prehistoric times*
C. in the last century
D. within the last 500 years
Difficulty: Easy ASM Standard: 23
3. Which individual first observed unicellular organisms, which he called “animalcules,” using a microscope he
developed?
A. Robert Koch
B. Louis Pasteur
C. Thucydides
D. Antonie van Leeuwenhoek*
Difficulty: Easy ASM Standard: 6
4. 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?
A. autoclaves
B. ethylene oxide
dr.j
,3|Page
C. incubators
D. microincinerators*
Difficulty: Easy ASM Standard: 36
dr.j
, 4|Page
5. The Swedish botanist known for having developed an important biological classification system is which of
the following people?
A. Ernst Haeckel
B. Carolus Linnaeus*
C. Louis Pasteur
D. Robert Whittaker
Difficulty: Easy ASM Standard: N/A
6. Which kingdom was the only one found in Empire Prokaryota?
A. Animalia
B. Fungi
C. Monera*
D. Protista
Difficulty: Easy ASM Standard: N/A
7. Which are the three currently accepted domains?
A. Archaea, Bacteria, and Eukarya*
B. Archaea, Prokaryota, and Eukaryota
C. Bacteria, Fungi, and Protista
D. Bacteria, Prokaryota, and Eukarya
Difficulty: Easy ASM Standard: N/A
8. Which two taxonomic units are typically used to identify an organism when using binomial nomenclature?
A. domain and kingdom
B. genus and family
C. genus and species*
D. phylum and class
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