Question 1

Depending on the type of virus, which of the following is a function of the virus capsid?

Accepted Answer

A)  To attach to the correct type of host cell. 
B)  To protect the viral genome from nucleases. 
C)  To ensure delivery of the genome into the host cell. 
D)  To protect the viral genome from damage by UV light. 
E)  All of the above functions are correct. 
A)  To attach to the correct type of host cell. 
B)  To protect the viral genome from nucleases. 
C)  To ensure delivery of the genome into the host cell. 
D)  To protect the viral genome from damage by UV light. 
E)  All of the above functions are correct.

Question 2

Which of the following is NOT a characteristic of a regular icosahedron?

Accepted Answer

A)  It has 12 vertices of 5-fold symmetry. 
B)  It has 20 triangular faces. 
C)  It has 20 sides with 3-fold symmetry. 
D)  It has 30 edges with 2-fold symmetry 
E)  It has 6 square faces. 
A)  It has 12 vertices of 5-fold symmetry. 
B)  It has 20 triangular faces. 
C)  It has 20 sides with 3-fold symmetry. 
D)  It has 30 edges with 2-fold symmetry 
E)  It has 6 square faces.

Question 3

How many copies of the capsid protein would there be in an icosahedral capsid with a Triangulation number of 7?

Accepted Answer

A)  70 
B)  210 
C)  280 
D)  420 
E)  490 
A)  70 
B)  210 
C)  280 
D)  420 
E)  490

Question 4

The lipid membrane that surrounds the nucleocapsid of some virus particles is called the:

Accepted Answer

A)  matrix 
B)  tegument 
C)  capsid 
D)  envelope 
E)  glycoprotein 
A)  matrix 
B)  tegument 
C)  capsid 
D)  envelope 
E)  glycoprotein

Exam 2: Virus Structure and Assembly

Depending on the type of virus, which of the following is a function of the virus capsid?

Which of the following is NOT a characteristic of a regular icosahedron?

How many copies of the capsid protein would there be in an icosahedral capsid with a Triangulation number of 7?

The lipid membrane that surrounds the nucleocapsid of some virus particles is called the:

Introduction to Virology

Virus Classification: The World of Viruses

Virus Entry

Single-Stranded RNA Bacteriophages

Microviruses

Bacteriophage

Bacteriophage Lambda

Viruses of Archaea

Cucumber Mosaic Virus

Picornaviruses

Flaviviruses

Togaviruses

Coronaviruses

Paramyxo-Viruses and Rhabdoviruses

Filovirouses

Bunyaviruses

Influenza Viruses

Reoviruses

Parvoviruses

Polyomaviruses

Papillomaviruses

Adenoviruses

Herpesviruses

Baculoviruses

Poxviruses

Viruses of Algae and Mimivirus

Retroviruses

Human Immunodeficiency

Hepadnaviruses

Viroids and Hepatitis Delta Virus

Prions

Intrinsic Cellular Defenses Against Virus Infection

Innate and Adaptive Immune Responses to Virus Infection

Antiviral Vaccines

Antiviral Chemotherapy

Eukaryotic Virus Vectors

Filters