Question 1

All of the following are characteristics of viruses except

Accepted Answer

A) they can be crystallized. 
B) they often have a geometric capsid. 
C) they have a viscous fluid inside their capsids. 
D) they can cause fatal diseases. 
E) they can cause mild diseases. 
A) they can be crystallized. 
B) they often have a geometric capsid. 
C) they have a viscous fluid inside their capsids. 
D) they can cause fatal diseases. 
E) they can cause mild diseases. C

Question 2

The capsomers are made of

Accepted Answer

A) DNA. 
B) RNA. 
C) lipids. 
D) protein. 
E) carbohydrate. 
A) DNA. 
B) RNA. 
C) lipids. 
D) protein. 
E) carbohydrate. D

Question 3

The International Committee on Taxonomy of Viruses has determined that there are only three orders of viruses.

Accepted Answer

A) True 
 B)False  True

Question 4

A(n) _____ is the protein shell around the nucleic acid core of a virus.

Accepted Answer

The answer of A(n) _____ is the protein shell around...

Question 5

Which of the following parts of a virus is not always present?

Accepted Answer

A) envelope 
B) nucleic acid 
C) capsid 
D) capsomers 
E) None of the choices are optional parts of a virus. 
A) envelope 
B) nucleic acid 
C) capsid 
D) capsomers 
E) None of the choices are optional parts of a virus.

Question 6

Which body system is mainly affected by Creutzfeldt-Jakob disease?

Accepted Answer

A) digestive 
B) genitourinary 
C) nervous 
D) circulatory 
E) respiratory 
A) digestive 
B) genitourinary 
C) nervous 
D) circulatory 
E) respiratory

Question 7

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

Accepted Answer

bacterial

Question 8

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 9

In general, most DNA viruses multiply in the host cell's _____, while most RNA viruses multiply in the host cell's _____.

Accepted Answer

A) nucleus, cytoplasm 
B) cytoplasm, cell membrane 
C) cell membrane, cytoplasm 
D) cytoplasm, nucleus 
E) nucleus, endoplasmic reticulum 
A) nucleus, cytoplasm 
B) cytoplasm, cell membrane 
C) cell membrane, cytoplasm 
D) cytoplasm, nucleus 
E) nucleus, endoplasmic reticulum

Question 10

All of the following is correct about treating viral diseases except

Accepted Answer

A) viruses are killed by the same antibiotics that kill bacteria. 
B) many antiviral drugs block viral replication. 
C) many antiviral drugs cause severe side effects. 
D) interferons show potential for treating and preventing viral infections. 
E) All of the choices are correct. 
A) viruses are killed by the same antibiotics that kill bacteria. 
B) many antiviral drugs block viral replication. 
C) many antiviral drugs cause severe side effects. 
D) interferons show potential for treating and preventing viral infections. 
E) All of the choices are correct.

Question 11

Viruses have 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 12

Host range is limited by

Accepted Answer

A) type of nucleic acid in the virus. 
B) age of the host cell. 
C) type of host cell receptors on cell membrane. 
D) size of the host cell. 
E) All of the choices are correct. 
A) type of nucleic acid in the virus. 
B) age of the host cell. 
C) type of host cell receptors on cell membrane. 
D) size of the host cell. 
E) All of the choices are correct.

Question 13

Two noncellular agents, smaller than viruses, are the infectious proteins called _____, and the infectious RNA strands called _____.

Accepted Answer

The answer of Two noncellular agents, smaller than viruses, are...

Question 14

Viral infections are easier to treat with drugs than bacterial infections.

Accepted Answer

A) True 
 B)False

Question 15

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

Question 16

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

Accepted Answer

The answer of One of the principal capsid shapes is...

Question 17

Compare and contrast viruses, prions, and viroids.

Accepted Answer

Viruses, prions, and viroids are all inf

Question 18

Viruses that infect bacteria are specifically called _____.

Accepted Answer

The answer of Viruses that infect bacteria are specifically called...

Question 19

Visible, clear, well-defined patches in a monolayer of virus-infected cells in a culture are called

Accepted Answer

A) lysogeny. 
B) budding. 
C) plaques. 
D) cytopathic effects. 
E) pocks. 
A) lysogeny. 
B) budding. 
C) plaques. 
D) cytopathic effects. 
E) pocks.

Question 20

The correct sequence of events in viral multiplication is

Accepted Answer

A) penetration, replication, maturation, adsorption, assembly, release. 
B) replication, penetration, maturation, assembly, absorption, release. 
C) adsorption, penetration, replication, maturation, assembly, release. 
D) assembly, maturation, replication, release, penetration, adsorption. 
E) adsorption, release, maturation, replication, assembly, penetration. 
A) penetration, replication, maturation, adsorption, assembly, release. 
B) replication, penetration, maturation, assembly, absorption, release. 
C) adsorption, penetration, replication, maturation, assembly, release. 
D) assembly, maturation, replication, release, penetration, adsorption. 
E) adsorption, release, maturation, replication, assembly, penetration.

Exam 6: An Introduction to Viruses

All of the following are characteristics of viruses except

The capsomers are made of

The International Committee on Taxonomy of Viruses has determined that there are only three orders of viruses.

A(n) _____ is the protein shell around the nucleic acid core of a virus.

Which of the following parts of a virus is not always present?

Which body system is mainly affected by Creutzfeldt-Jakob disease?

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

Uncoating of viral nucleic acid

In general, most DNA viruses multiply in the host cell's _____, while most RNA viruses multiply in the host cell's _____.

All of the following is correct about treating viral diseases except

Viruses have all the following except

Host range is limited by

Two noncellular agents, smaller than viruses, are the infectious proteins called _____, and the infectious RNA strands called _____.

Viral infections are easier to treat with drugs than bacterial infections.

Which of the following is a type of cytopathic effect?

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

Compare and contrast viruses, prions, and viroids.

Viruses that infect bacteria are specifically called _____.

Visible, clear, well-defined patches in a monolayer of virus-infected cells in a culture are called

The correct sequence of events in viral multiplication is

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods of Studying Microorganisms

A Survey of Prokaryotic Cells and Microorganisms

A Survey of Eukaryotic Cells and Microorganisms

Microbial Nutrition, Ecology, and Growth

An Introduction to Microbial Metabolism: the Chemical Crossroads of Life

An Introduction to Microbial Genetics

Genetic Engineering: a Revolution in Molecular Biology

Physical and Chemical Agents for Microbial Control

Drugs, Microbes, Host-The Elements of Chemotherapy

Microbe-Human Interactions: Infection, Disease, and Epidemiology

An Introduction to Host Defenses and Innate Immunities

Adaptive, Specific Immunity and Immunization

Disorders in Immunity

Procedures for Identifying Pathogens and Diagnosing Infections

The Gram-Positive and Gram-Negative Cocci of Medical Importance

The Gram-Positive Bacilli of Medical Importance

The Gram-Negative Bacilli of Medical Importance

Miscellaneous Bacterial Agents of Disease

The Fungi of Medical Importance

The Parasites of Medical Importance

Introduction to Viruses That Infect Humans: the Dna Viruses

The Rna Viruses That Infect Humans

Environmental Microbiology

Applied and Industrial Microbiology

Filters

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

In general, most DNA viruses multiply in the host cell's _, while most RNA viruses multiply in the host cell's _.

Two noncellular agents, smaller than viruses, are the infectious proteins called _, and the infectious RNA strands called _.