#1
Which enzyme is responsible for reverse transcription in retroviruses?
DNA polymerase
RNA polymerase
Reverse transcriptase
Ligase
#2
Which process involves the transfer of genetic material from one bacterium to another through direct cell-to-cell contact?
Conjugation
Transformation
Transduction
Replication
#3
Which of the following is NOT a method of genetic transfer in bacteria?
Conjugation
Transformation
Replication
Transduction
#4
Which of the following viruses is an example of a retrovirus?
Influenza virus
Herpes simplex virus
Hepatitis B virus
HIV
#5
What is the function of the viral protein capsid?
To recognize host cell receptors
To aid in the integration of viral DNA into the host genome
To protect the viral genome
To facilitate viral replication
#6
Which of the following is a method of horizontal gene transfer in bacteria?
Conjugation
Mitosis
Meiosis
Transcription
#7
Which of the following is an example of a bacteriophage?
Poliovirus
Influenza virus
HIV
T4 phage
#8
Which of the following is true regarding viral replication?
It only occurs in eukaryotic cells
It always involves the integration of viral DNA into the host genome
It may involve RNA-dependent RNA polymerase in RNA viruses
It does not involve any host cellular machinery
#9
Which of the following statements is true regarding lysogenic cycle in bacteriophages?
It always results in the immediate lysis of the host cell
It involves the integration of viral DNA into the host genome
It only occurs in certain types of viruses
It is synonymous with the lytic cycle
#10
What is the primary function of viral integrase?
To cleave viral RNA
To integrate viral DNA into the host genome
To replicate viral DNA
To transcribe viral RNA
#11
Which enzyme is responsible for the synthesis of DNA from an RNA template?
Reverse transcriptase
RNA polymerase
DNA polymerase
Ligase
#12
In what stage of viral replication does assembly of new virions occur?
Penetration
Maturation
Attachment
Release
#13
Which of the following is a characteristic of RNA viruses?
They replicate their genome using host DNA polymerase
They often have proofreading mechanisms to correct errors in replication
They typically have a higher mutation rate compared to DNA viruses
They are unable to infect animal cells
#14
Which of the following is NOT a step in the lytic cycle of viral replication?
Attachment
Integration
Penetration
Assembly
#15
Which of the following is a characteristic of DNA viruses?
They replicate their genome using host RNA polymerase
They typically have a higher mutation rate compared to RNA viruses
They replicate their genome in the cytoplasm of the host cell
They often integrate their genome into the host chromosome
#16
What is the role of the viral envelope in viral replication?
To recognize and bind to host cell receptors
To protect the viral genome
To facilitate viral genome replication
To aid in the integration of viral DNA into the host genome
#17
Which of the following is a feature of the lytic cycle in viral replication?
It involves the formation of prophages
It results in the release of new viral particles without destroying the host cell
It involves the direct killing of the host cell
It is a slow process compared to the lysogenic cycle
#18
What is the function of the viral enzyme neuraminidase?
To facilitate viral entry into the host cell
To prevent the release of newly formed virions from the host cell
To aid in the integration of viral DNA into the host genome
To facilitate viral genome replication
#19
Which of the following is a characteristic feature of the lysogenic cycle?
It always results in the immediate lysis of the host cell
It involves the replication of the viral genome without destroying the host cell
It is shorter in duration compared to the lytic cycle
It does not involve the integration of viral DNA into the host genome
#20
What is the role of the viral protein protease in viral replication?
To facilitate viral entry into the host cell
To prevent the release of newly formed virions from the host cell
To cleave viral polyproteins into functional proteins
To facilitate viral genome replication