Brock Biology of Microorganisms 15e (Madigan et al.) — Chapter 11 Test Bank

Brock Biology of Microorganisms, 15e (Madigan et al.) Chapter 11 Test Bank
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Chapter 11 - test bank


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Brock Biology of Microorganisms, 15e (Madigan et al.)
Chapter 11 Genetics of Bacteria and Archaea

11.1 Multiple Choice Questions

1) A mutant that has a nutritional requirement for growth is an example of a(n)
A) autotroph.
B) auxotroph.
C) heterotroph.
D) organotroph.
Answer: B
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 11.1

2) Consider a mutation in which the change is from UAC to UAU. Both codons specify the
amino acid tyrosine. Which type of point mutation is this?
A) silent mutation
B) nonsense mutation
C) missense mutation
D) frameshift mutation
Answer: A
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 11.2

3) A mutation that readily reverses to restore the original parental type would most likely be due
to a(n)
A) deletion.
B) insertion.
C) point mutation.
D) frameshift mutation.
Answer: C
Bloom’s Taxonomy: 3-4: Applying/Analyzing
Chapter Section: 11.2

4) Which process listed below allows genetic material to be transferred from a virus-like particle
that lacks genes for its own replication?
A) conjugation of an F+ plasmid
B) gene transfer through a gene transfer agent
C) transduction by a dsDNA phage Mu
D) transformation of a linear piece of DNA
Answer: B
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 11.5, 11.7




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5) The mutagens 2-aminopurine and 5-bromouracil are examples of
A) alkylating agents.
B) nucleotide base analogs.
C) chemicals reacting with DNA.
D) None of the answers are correct.
Answer: B
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 11.4

6) The killing of cells by UV irradiation involves
A) absorption at 260 nm by proteins only.
B) absorption at 260 nm by RNA only.
C) formation of pyrimidine dimers.
D) formation of purine dimers.
Answer: C
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 11.4

7) Ionizing radiation does NOT include
A) gamma rays.
B) UV rays.
C) X-rays.
D) cosmic rays.
Answer: B
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 11.4

8) Which of the following methods may introduce foreign DNA into a recipient?
A) transformation
B) transduction
C) conjugation
D) transformation, transduction, and conjugation
Answer: D
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 11.8

9) The uptake of free DNA from the environment , while transfer of DNA with cell-to-
cell contact would most likely result in .
A) transformation / conjugation
B) transduction / conjugation
C) conjugation / transformation
D) transformation / transduction
Answer: A
Bloom’s Taxonomy: 1-2: Remembering/Understanding
Chapter Section: 11.8



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Copyright © 2018 Pearson Education, Inc.

Brock Biology of Microorganisms, 15e (Madigan et al.) Chapter 11 Test Bank.docx
2026/02/16
Brock Biology of Microorganisms, 15e (Madigan et al.) Chapter 11 Test Bank
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