#1
What is the primary function of the viral capsid?
To protect the viral genome
To assist in viral replication
To aid in viral attachment to host cells
To regulate viral gene expression
#2
Which of the following is NOT a type of viral nucleic acid?
DNA
RNA
Protein
Reverse-transcribing RNA
#3
Which viral structure contains the viral genetic material?
Capsid
Envelope
Nucleocapsid
Matrix
#4
Which of the following is a characteristic of bacteriophages?
They infect only eukaryotic cells
They have an RNA genome
They lack a protein capsid
They infect bacteria
#5
Which of the following is a characteristic of naked viruses?
They lack a lipid bilayer
They only infect prokaryotic cells
They contain both DNA and RNA
They are incapable of causing disease
#6
Which viral structure is responsible for attaching to host cell receptors?
Capsid
Envelope
Nucleocapsid
Matrix
#7
Which type of virus relies on the host cell's RNA polymerase to replicate its genome?
DNA virus
Positive-sense RNA virus
Negative-sense RNA virus
Retrovirus
#8
Which of the following is a characteristic feature of retroviruses?
Single-stranded DNA genome
High-fidelity replication machinery
Integration of viral genome into host DNA
Presence of a polyhedral capsid
#9
What is the function of the viral matrix protein?
Protection of the viral genome
Mediation of viral entry into host cells
Facilitation of viral replication
Attachment to host cell receptors
#10
What is the function of viral glycoproteins?
Facilitate viral replication
Package the viral genome
Assist in host cell recognition and entry
Protect the viral genome
#11
Which viral structure is unique to enveloped viruses?
Capsid
Nucleocapsid
Envelope
Matrix
#12
Which enzyme do retroviruses use to convert RNA into DNA?
DNA polymerase
RNA polymerase
Reverse transcriptase
Ligase
#13
What is the function of the viral envelope proteins?
Protection of the viral genome
Facilitation of viral replication
Attachment to host cell receptors
Integration of viral genome into host DNA
#14
What is the role of the viral polymerase?
Catalyze the synthesis of viral proteins
Convert viral RNA into DNA
Generate mRNA from the viral genome
Package the viral genome into the capsid
#15
Which viral structure is responsible for protecting the viral genome from host defenses?
Capsid
Envelope
Nucleocapsid
Matrix