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Viral Replication and Life Cycle Quiz

#1

Which of the following enzymes is responsible for unwinding the DNA during viral replication?

Helicase
Explanation

Helicase unwinds the DNA during viral replication.

#2

What is the primary function of reverse transcriptase in retroviral replication?

Synthesizing DNA from RNA
Explanation

Reverse transcriptase synthesizes DNA from RNA in retroviral replication.

#3

Which phase of the viral life cycle involves the release of mature virions from the host cell?

Release
Explanation

Release phase involves the release of mature virions from the host cell.

#4

In which stage of the viral replication cycle does the virus acquire its envelope, if it has one?

Maturation
Explanation

The virus acquires its envelope, if it has one, in the maturation stage of the viral replication cycle.

#5

Which viral life cycle involves the integration of the viral genome into the host genome?

Lysogenic cycle
Explanation

The lysogenic cycle involves the integration of the viral genome into the host genome.

#6

Which phase of the viral life cycle involves the assembly of new viral particles?

Maturation
Explanation

Maturation phase involves the assembly of new viral particles.

#7

What is the role of integrase during the life cycle of a retrovirus?

Integrates viral DNA into the host genome
Explanation

Integrase integrates viral DNA into the host genome in the retroviral life cycle.

#8

What is the function of the protease enzyme in the viral life cycle?

Cleaves viral proteins for maturation
Explanation

Protease enzyme cleaves viral proteins for maturation in the viral life cycle.

#9

Which viral enzyme is responsible for creating a complementary RNA strand during RNA virus replication?

RNA polymerase
Explanation

RNA polymerase is responsible for creating a complementary RNA strand during RNA virus replication.

#10

Which of the following is a characteristic feature of the lytic cycle in viral replication?

Cell lysis and immediate release of virions
Explanation

Cell lysis and immediate release of virions are characteristic features of the lytic cycle in viral replication.

#11

Which of the following is NOT a method of viral entry into host cells?

Exocytosis
Explanation

Exocytosis is NOT a method of viral entry into host cells.

#12

What is the mechanism by which some viruses evade the host immune response by integrating their genome into host DNA?

Latency
Explanation

Latency is the mechanism by which some viruses evade the host immune response by integrating their genome into host DNA.

#13

What is the term for the process by which some viruses integrate their genetic material into the host genome and remain dormant for an extended period?

Latency
Explanation

Latency is the process by which some viruses integrate their genetic material into the host genome and remain dormant for an extended period.

#14

Which of the following is NOT a step in the process of viral assembly?

Attachment to host cell
Explanation

Attachment to the host cell is NOT a step in the process of viral assembly.

#15

What is the primary difference between RNA viruses and DNA viruses in terms of their replication strategies?

RNA viruses have a higher mutation rate than DNA viruses.
Explanation

RNA viruses have a higher mutation rate than DNA viruses in terms of their replication strategies.

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