C HAPTER 8: V IRUSES AND T HEIR
R EPLICATION
Test Bank for Brock Biology of Microorganism 16th E dition by Michael T.
Madigan
8.1 Multiple Choice Questions
1. Viral replication is
A) independent of the host cell’s DNA but dependent on the host cell’s
enz ymes and metabolism.
B) independent of both the host cell’s DNA and the host cell’s enzymes
and metabolism.
C) dependent on the host cell’s DNA and RNA.
D) dependent on the host cell’s DNA, RNA, enz ymes, and metabolism.
2. Viral replication occurs
A) intracellularl y.
B) extracellularl y.
C) both intracellularl y and extracellularl y.
D) either intracellularl y or extracellu larl y, depending on the virus
involved.
3. Viral size is generally measured in
A) micrometers.
B) picometers.
C) nanometers.
D) centimeters.
,4. Cellular receptors may be composed of
A) proteins.
B) carbohydrates.
C) lipids.
D) combinations of proteins, carbohydrates, and/or lipids.
5. Which of the following are the hosts for most enveloped viruses?
A) Bacteria
B) animals
C) Archaea
D) fungi
6. Prophage formation occurs after lambda infection if
A) the cI gene is transcribed and cI protein accumulates.
B) cII expression occurs.
C) Cro accumulates in the cell.
D) both Cro and cI are equall y activated.
7. The term ʺphageʺ is generall y reserved for the viruses that infect
A) animals.
B) plants.
C) bacteria.
D) multiple species.
8. The size and shape of viral particles is largel y governed by the size and
packaging of the viral
A) envelope.
B) enz ymes.
C) prophage.
D) genome.
, 9. Some bacteriophage possess an enz yme similar to ______, which makes a
small hole in the bacterial cell wall, allowing the viral nucleic acid to
enter.
A) peptidogl ycanase
B) infectase
C) lysoz yme
D) nuclease
10.Enveloped viral membranes are generall y _____ with associated virus -
specific _____.
A) lipid bilayers / phospholipids
B) protein bilayers / lipids
C) lipid bilayers / proteins
D) gl ycolipid bilayers / phospholipids
11.Which statement is TRUE?
A) All viruses contain their own nucleic acid pol ymerases.
B) RNA viruses cont ain their own nucleic acid pol ymerases.
C) Viruses do not contain their own nucleic acid pol ymerases.
D) The origins of the nucleic acid pol ymerases used by viruses are
eukaryotic.
12.Reverse transcriptase is a(n)
A) RNA-dependent DNA pol ymerase.
B) DNA-dependent D NA pol ymerase.
C) RNA-dependent RNA pol ymerase.
D) DNA-dependent RNA pol ymerase.
13.Viruses infecting ______ are t ypicall y the easiest to grow in the
laboratory.
A) plants
B) animals
R EPLICATION
Test Bank for Brock Biology of Microorganism 16th E dition by Michael T.
Madigan
8.1 Multiple Choice Questions
1. Viral replication is
A) independent of the host cell’s DNA but dependent on the host cell’s
enz ymes and metabolism.
B) independent of both the host cell’s DNA and the host cell’s enzymes
and metabolism.
C) dependent on the host cell’s DNA and RNA.
D) dependent on the host cell’s DNA, RNA, enz ymes, and metabolism.
2. Viral replication occurs
A) intracellularl y.
B) extracellularl y.
C) both intracellularl y and extracellularl y.
D) either intracellularl y or extracellu larl y, depending on the virus
involved.
3. Viral size is generally measured in
A) micrometers.
B) picometers.
C) nanometers.
D) centimeters.
,4. Cellular receptors may be composed of
A) proteins.
B) carbohydrates.
C) lipids.
D) combinations of proteins, carbohydrates, and/or lipids.
5. Which of the following are the hosts for most enveloped viruses?
A) Bacteria
B) animals
C) Archaea
D) fungi
6. Prophage formation occurs after lambda infection if
A) the cI gene is transcribed and cI protein accumulates.
B) cII expression occurs.
C) Cro accumulates in the cell.
D) both Cro and cI are equall y activated.
7. The term ʺphageʺ is generall y reserved for the viruses that infect
A) animals.
B) plants.
C) bacteria.
D) multiple species.
8. The size and shape of viral particles is largel y governed by the size and
packaging of the viral
A) envelope.
B) enz ymes.
C) prophage.
D) genome.
, 9. Some bacteriophage possess an enz yme similar to ______, which makes a
small hole in the bacterial cell wall, allowing the viral nucleic acid to
enter.
A) peptidogl ycanase
B) infectase
C) lysoz yme
D) nuclease
10.Enveloped viral membranes are generall y _____ with associated virus -
specific _____.
A) lipid bilayers / phospholipids
B) protein bilayers / lipids
C) lipid bilayers / proteins
D) gl ycolipid bilayers / phospholipids
11.Which statement is TRUE?
A) All viruses contain their own nucleic acid pol ymerases.
B) RNA viruses cont ain their own nucleic acid pol ymerases.
C) Viruses do not contain their own nucleic acid pol ymerases.
D) The origins of the nucleic acid pol ymerases used by viruses are
eukaryotic.
12.Reverse transcriptase is a(n)
A) RNA-dependent DNA pol ymerase.
B) DNA-dependent D NA pol ymerase.
C) RNA-dependent RNA pol ymerase.
D) DNA-dependent RNA pol ymerase.
13.Viruses infecting ______ are t ypicall y the easiest to grow in the
laboratory.
A) plants
B) animals
