Microbiology: An Introduction 13th Edition Tortora | Test Bank, Practice Questions & Answers 2026/2027

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Chapter 1 The Microbial World and You


1.1 Multiple-Choice Questions


1) Microorganisms are involved in each of the following processes EXCEPT
A) infection.
B) decomposition of organic material.
C) O2 production.
D) food production.
E) smog production.
Answer: E
Section: 1.1
Bloom's Taxonomy: Remembering
Learning Outcome: 1.1
Global Outcome: 5


2) Each of the following organisms would be considered a microbe EXCEPT
A) yeast.
B) protozoan.
C) bacterium.
D) mushroom.
E) virus.
Answer: D
Section: 1.1
Bloom's Taxonomy: Remembering
Learning Outcome: 1.4

3) The term used to describe a disease-causing microorganism is
A) microbe.
B) bacterium.
C) virus.
D) pathogen.
E) infection.
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Answer: D
Section: 1.1
Bloom's Taxonomy: Remembering
Learning Outcome: 1.1

4) Common commercial benefits of microorganisms include synthesis of
A) riboflavin.
B) acetone.
C) insulin.
D) aspirin.
E) riboflavin, acetone and insulin.
Answer: E
Section: 1.1
Bloom's Taxonomy: Remembering
ASMcue Outcome: 6.3
Learning Outcome: 1.1


5) What factors contribute to the rising incidence of antibiotic resistance?
A) overuse of the specific drugs
B) misuse of the specific drugs
C) random mutations in bacterial genomes
D) random mutations, overuse and misuse of specific drugs
E) overuse and misuse of specific drugs
Answer: D
Section: 1.5
Bloom's Taxonomy: Understanding
ASMcue Outcome: 4.1
Learning Outcome: 1.19
Global Outcome: 5


6) The formal system for classifying and naming organisms was developed by
A) Robert Koch.
B) Ignaz Semmelweis.

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C) Aristotle.
D) Carolus Linnaeus.
E) Louis Pasteur.
Answer: D

Section: 1.2
Bloom's Taxonomy: Remembering
Learning Outcome: 1.3


7) In the name Staphylococcus aureus, aureus is the
A) genus.
B) domain name.
C) species.
D) kingdom.
E) family name.
Answer: C
Section: 1.2
Bloom's Taxonomy: Understanding
Learning Outcome: 1.3


8) A prokaryotic cell may possess each of the following cellular components EXCEPT
A) flagella.
B) a nucleus.
C) ribosomes.
D) a cell wall.
E) a cell membrane.
Answer: B
Section: 1.2
Bloom's Taxonomy: Remembering
ASMcue Outcome: 2.1
Learning Outcome: 1.4


9) Which of the following is NOT associated with viruses?

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