, OpenStax Microbiology Test Bank / OSX
Microbiology Test Bank - Chapter 01 to
Chapter 26 2026 Update
(Multiple Choice, True/False, Matching, Fill in the Blank, Short Answers &
Brief Essay)
Chapter 1 : An Invisible World
Chapter 2 : How We See the Invisible World
Chapter 3 : The Cell
Chapter 4 : Prokaryotic Diversity
Chapter 5 : The Eukaryotes of Microbiology
Chapter 6 : Acellular Pathogens
Chapter 7 : Microbial
Biochemistry Chapter 8 :
Microbial Metabolism Chapter 9 :
Microbial Growth
Chapter 10 : Biochemistry of the Genome
Chapter 11 : Mechanisms of Microbial
Genetics
Chapter 12 : Modern Applications of Microbial Genetics
Chapter 13 : Control of Microbial Growth
Chapter 14 : Antimicrobial Drugs
Chapter 15 : Microbial Mechanisms of Pathogenicity Chapter
16 : Disease and Epidemiology
Chapter 17 : Innate Nonspecific Host
Defenses Chapter 18 : Adaptive Specific Host
Defenses Chapter 19 : Diseases of the
Immune System
,Chapter 20 : Laboratory Analysis of the Immune
Response Chapter 21 : Skin and Eye Infections
Chapter 22 : Respiratory System Infections Chapter
23 : Urogenital System Infections Chapter 24 :
Digestive System Infections
Chapter 25 : Circulatory and Lymphatic System Infections
Chapter 26 : Nervous System Infections Description
, OpenStax Microbiology Test Bank
Chapter 1: An Invisible World
Chapter 1: An Invisible World
* (correct answer)
= 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.* (correct answer)
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* (correct answer)
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* (correct answer)
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
Page 1 of 17
Microbiology Test Bank - Chapter 01 to
Chapter 26 2026 Update
(Multiple Choice, True/False, Matching, Fill in the Blank, Short Answers &
Brief Essay)
Chapter 1 : An Invisible World
Chapter 2 : How We See the Invisible World
Chapter 3 : The Cell
Chapter 4 : Prokaryotic Diversity
Chapter 5 : The Eukaryotes of Microbiology
Chapter 6 : Acellular Pathogens
Chapter 7 : Microbial
Biochemistry Chapter 8 :
Microbial Metabolism Chapter 9 :
Microbial Growth
Chapter 10 : Biochemistry of the Genome
Chapter 11 : Mechanisms of Microbial
Genetics
Chapter 12 : Modern Applications of Microbial Genetics
Chapter 13 : Control of Microbial Growth
Chapter 14 : Antimicrobial Drugs
Chapter 15 : Microbial Mechanisms of Pathogenicity Chapter
16 : Disease and Epidemiology
Chapter 17 : Innate Nonspecific Host
Defenses Chapter 18 : Adaptive Specific Host
Defenses Chapter 19 : Diseases of the
Immune System
,Chapter 20 : Laboratory Analysis of the Immune
Response Chapter 21 : Skin and Eye Infections
Chapter 22 : Respiratory System Infections Chapter
23 : Urogenital System Infections Chapter 24 :
Digestive System Infections
Chapter 25 : Circulatory and Lymphatic System Infections
Chapter 26 : Nervous System Infections Description
, OpenStax Microbiology Test Bank
Chapter 1: An Invisible World
Chapter 1: An Invisible World
* (correct answer)
= 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.* (correct answer)
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* (correct answer)
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* (correct answer)
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
Page 1 of 17
