Molecular Virology and Infections Quiz
Questions and Answers
1: What is the basic structural unit of a virus? - correct answer - The basic
structural unit of a virus is the virion.
2: What are the two main components of a virion? - correct answer -
The two main components of a virion are the nucleic acid (DNA or RNA) and
the protein coat (capsid).
3: What is the function of the viral capsid? - correct answer -
The viral capsid protects the viral genetic material and aids in its delivery
into host cells.
4: What is a viral envelope, and how is it acquired? - correct answer -
A viral envelope is a lipid bilayer derived from the host cell membrane,
acquired as the virus buds off from the host cell.
,5: What are the two types of viral nucleic acids? - correct answer -
The two types of viral nucleic acids are DNA and RNA.
6: How do DNA viruses typically replicate? - correct answer -
DNA viruses typically replicate in the host cells nucleus using the hosts
replication machinery.
7: How do RNA viruses typically replicate? - correct answer -
RNA viruses typically replicate in the host cells cytoplasm using their own
RNA-dependent RNA polymerase.
8: What is reverse transcription, and which viruses use this process? -
correct answer - Reverse transcription is the process of converting RNA into
DNA, used by retroviruses like HIV.
9: What is a lytic infection? - correct answer -
A lytic infection is a type of viral infection that results in the destruction of
the host cell and release of new virions.
, 10: What is a latent infection? - correct answer -
A latent infection is a type of viral infection where the virus remains
dormant within the host cell and can reactivate later.
11: What is viral tropism? - correct answer -
Viral tropism is the specificity of a virus for a particular host tissue or cell
type.
12: What role do viral receptors play in infection? - correct answer -
Viral receptors on host cells are specific molecules that viruses bind to for
entry into the cell.
13: What is the function of the viral polymerase enzyme? - correct answer -
The viral polymerase enzyme replicates the viral genome.
Questions and Answers
1: What is the basic structural unit of a virus? - correct answer - The basic
structural unit of a virus is the virion.
2: What are the two main components of a virion? - correct answer -
The two main components of a virion are the nucleic acid (DNA or RNA) and
the protein coat (capsid).
3: What is the function of the viral capsid? - correct answer -
The viral capsid protects the viral genetic material and aids in its delivery
into host cells.
4: What is a viral envelope, and how is it acquired? - correct answer -
A viral envelope is a lipid bilayer derived from the host cell membrane,
acquired as the virus buds off from the host cell.
,5: What are the two types of viral nucleic acids? - correct answer -
The two types of viral nucleic acids are DNA and RNA.
6: How do DNA viruses typically replicate? - correct answer -
DNA viruses typically replicate in the host cells nucleus using the hosts
replication machinery.
7: How do RNA viruses typically replicate? - correct answer -
RNA viruses typically replicate in the host cells cytoplasm using their own
RNA-dependent RNA polymerase.
8: What is reverse transcription, and which viruses use this process? -
correct answer - Reverse transcription is the process of converting RNA into
DNA, used by retroviruses like HIV.
9: What is a lytic infection? - correct answer -
A lytic infection is a type of viral infection that results in the destruction of
the host cell and release of new virions.
, 10: What is a latent infection? - correct answer -
A latent infection is a type of viral infection where the virus remains
dormant within the host cell and can reactivate later.
11: What is viral tropism? - correct answer -
Viral tropism is the specificity of a virus for a particular host tissue or cell
type.
12: What role do viral receptors play in infection? - correct answer -
Viral receptors on host cells are specific molecules that viruses bind to for
entry into the cell.
13: What is the function of the viral polymerase enzyme? - correct answer -
The viral polymerase enzyme replicates the viral genome.
