Question 1

Uncoating of viral nucleic acid

Accepted Answer

A) does not occur in bacteriophage multiplication. 
B) involves enzymatic destruction of the capsid. 
C) occurs during penetration in the multiplication cycle. 
D) occurs before replication. 
E) All of the choices are correct. 
A) does not occur in bacteriophage multiplication. 
B) involves enzymatic destruction of the capsid. 
C) occurs during penetration in the multiplication cycle. 
D) occurs before replication. 
E) All of the choices are correct.

Question 2

What type of phage enters an inactive prophage stage?

Accepted Answer

A) primary 
B) secondary 
C) temperate 
D) temporary 
E) transformed 
A) primary 
B) secondary 
C) temperate 
D) temporary 
E) transformed

Question 3

The process of dissolving the envelope and capsid to release the viral nucleic acid is

Accepted Answer

A) adsorption. 
B) penetration. 
C) uncoating. 
D) synthesis. 
E) assembly. 
A) adsorption. 
B) penetration. 
C) uncoating. 
D) synthesis. 
E) assembly.

Question 4

Viruses that infect bacteria are specifically called

Accepted Answer

A) viroids. 
B) prions. 
C) bacteriophages. 
D) satellite viruses. 
A) viroids. 
B) prions. 
C) bacteriophages. 
D) satellite viruses.

Question 5

Viral capsids are made from subunits called

Accepted Answer

A) envelopes. 
B) spikes. 
C) capsomeres. 
D) prophages. 
E) peptones. 
A) envelopes. 
B) spikes. 
C) capsomeres. 
D) prophages. 
E) peptones.

Question 6

Spikes are glycoproteins that can be found projecting from the viral capsid.

Accepted Answer

A) True 
 B)False

Question 7

When a virus enters a host cell,the viral genes redirect the genetic and metabolic activities of the host cell.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following occurs during assembly?

Accepted Answer

A) nucleocapsid is formed 
B) new viral nucleic acid is formed 
C) viral spikes insert in host cell membrane 
D) nucleocapsid is formed and viral spikes insert in host cell membrane 
E) the viral envelope and the host cell membrane fuse 
A) nucleocapsid is formed 
B) new viral nucleic acid is formed 
C) viral spikes insert in host cell membrane 
D) nucleocapsid is formed and viral spikes insert in host cell membrane 
E) the viral envelope and the host cell membrane fuse

Question 9

Persistent viruses that can reactivate periodically are

Accepted Answer

A) chronic latent viruses. 
B) oncoviruses. 
C) syncytia. 
D) inclusion bodies. 
E) cytopathic. 
A) chronic latent viruses. 
B) oncoviruses. 
C) syncytia. 
D) inclusion bodies. 
E) cytopathic.

Question 10

The primary purpose/s of viral cultivation is/are to

Accepted Answer

A) isolate and identify viruses in clinical specimens. 
B) prepare viruses for vaccines. 
C) do detailed research on viral structure,lifestyle,genetics,and effects on host cells. 
D) perform wide-scale harvesting of viruses. 
E) All of the choices are correct. 
A) isolate and identify viruses in clinical specimens. 
B) prepare viruses for vaccines. 
C) do detailed research on viral structure,lifestyle,genetics,and effects on host cells. 
D) perform wide-scale harvesting of viruses. 
E) All of the choices are correct.

Question 11

Which of the following is a type of cytopathic effect?

Accepted Answer

A) inclusions in the nucleus 
B) multinucleated giant cells 
C) inclusions in the cytoplasm 
D) rounding of cells 
E) All of the choices are correct. 
A) inclusions in the nucleus 
B) multinucleated giant cells 
C) inclusions in the cytoplasm 
D) rounding of cells 
E) All of the choices are correct.

Question 12

Viruses exhibit all the following except

Accepted Answer

A) definite shape. 
B) metabolism. 
C) genes. 
D) ability to infect host cells. 
E) ultramicroscopic size. 
A) definite shape. 
B) metabolism. 
C) genes. 
D) ability to infect host cells. 
E) ultramicroscopic size.

Question 13

Freshly isolated animal tissue that is placed in a growth medium and allowed to produce a cell monolayer is referred to as a/n _____ cell culture.

Accepted Answer

A) initial 
B) primary 
C) secondary 
D) continuous 
E) positive 
A) initial 
B) primary 
C) secondary 
D) continuous 
E) positive

Question 14

During lysogeny,an inactive prophage state occurs when the viral DNA is inserted into the host

Accepted Answer

A) cytoplasm. 
B) nucleus. 
C) nucleolus. 
D) DNA. 
E) cell membrane. 
A) cytoplasm. 
B) nucleus. 
C) nucleolus. 
D) DNA. 
E) cell membrane.

Question 15

Viruses are unable to multiply outside of a host cell.

Accepted Answer

A) True 
 B)False

Question 16

One of the principal viral capsid shapes is a 20-sided figure with 12 evenly spaced corners referred to as a/n _____ capsid.

Accepted Answer

A) spiked 
B) complex 
C) icosahedral 
D) helical 
E) buckeyball 
A) spiked 
B) complex 
C) icosahedral 
D) helical 
E) buckeyball

Question 17

Oncogenic viruses include all the following except

Accepted Answer

A) hepatitis B virus. 
B) measles virus. 
C) Papillomavirus. 
D) HTLV-I and HTLV-II viruses. 
E) Epstein-Barr virus. 
A) hepatitis B virus. 
B) measles virus. 
C) Papillomavirus. 
D) HTLV-I and HTLV-II viruses. 
E) Epstein-Barr virus.

Question 18

How are viroids transmitted?

Accepted Answer

A) respiratory secretions 
B) sex 
C) plant seeds 
D) blood products 
A) respiratory secretions 
B) sex 
C) plant seeds 
D) blood products

Question 19

What structures are used by bacteriophages to attach to host cell receptors?

Accepted Answer

A) viral sheaths 
B) tail fibers 
C) nucleic acids 
D) capsid heads 
A) viral sheaths 
B) tail fibers 
C) nucleic acids 
D) capsid heads

Question 20

In transduction,the viral genome

Accepted Answer

A) initiates lysis of the host. 
B) includes DNA from the previous host. 
C) is replicated in the cytoplasm. 
D) is replicated in the nucleus. 
A) initiates lysis of the host. 
B) includes DNA from the previous host. 
C) is replicated in the cytoplasm. 
D) is replicated in the nucleus.

Exam 6: An Introduction to the Viruses

Uncoating of viral nucleic acid

What type of phage enters an inactive prophage stage?

The process of dissolving the envelope and capsid to release the viral nucleic acid is

Viruses that infect bacteria are specifically called

Viral capsids are made from subunits called

Spikes are glycoproteins that can be found projecting from the viral capsid.

When a virus enters a host cell,the viral genes redirect the genetic and metabolic activities of the host cell.

Which of the following occurs during assembly?

Persistent viruses that can reactivate periodically are

The primary purpose/s of viral cultivation is/are to

Which of the following is a type of cytopathic effect?

Viruses exhibit all the following except

Freshly isolated animal tissue that is placed in a growth medium and allowed to produce a cell monolayer is referred to as a/n _____ cell culture.

During lysogeny,an inactive prophage state occurs when the viral DNA is inserted into the host

Viruses are unable to multiply outside of a host cell.

One of the principal viral capsid shapes is a 20-sided figure with 12 evenly spaced corners referred to as a/n _____ capsid.

Oncogenic viruses include all the following except

How are viroids transmitted?

What structures are used by bacteriophages to attach to host cell receptors?

In transduction,the viral genome

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods for the Culturing of Microscopic Analysis of Microorganisms

Prokaryotic Profiles: The Bacteria and Archaea

Eukaryotic Cells and Microorganisms

Microbial Nutrition, Ecology, and Growth

Microbial Metabolism: the Chemical Crossroads of Life

Microbial Genetics

Genetic Engineering and Recombinant Dna

Physical and Chemical Control of Microbes

Drugs, Microbes, host-The Elements of Chemotherapy

Microbe-Human Interactions: Infection and Disease

Host Defenses I: Overview and Nonspecific Defenses

Host Defenses II: Specific Immunity and Immunization

Disorders in Immunity

Diagnosing Infections

Infectious Diseases Affecting the Skin and Eyes

Infectious Diseases Affecting the Nervous System

Infectious Diseases Affecting the Cardiovascular and Lymphatic Systems

Infectious Diseases Affecting the Respiratory System

Infectious Diseases Affecting the Gastrointestinal Tract

Infectious Diseases Affecting the Genitourinary System

Microbes and the Environment

Applied Microbiology and Food and Water Safety

Filters