MCQ on Retrovirus: Structure, Significance and Examples




Retroviruses are a type of RNA virus that can reverse transcribe their RNA genome into DNA using the enzyme reverse transcriptase. This DNA is integrated into the host cell’s genome, potentially causing long-lasting infections. HIV is a well-known example of a retrovirus. This is an MCQ on Retrovirus – Example and Clinical Significance.

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1. 
What is a retrovirus?

2. 
Which enzyme is responsible for converting retroviral RNA into DNA within the host cell?

3. 
What is the term for the DNA copy of the retroviral genome integrated into the host cell's genome?

4. 
Which of the following retroviruses is responsible for causing AIDS in humans?

5. 
What is the key feature of a provirus?

6. 
What type of retrovirus causes a form of leukemia known as Adult T-cell leukemia/lymphoma?

7. 
Retroviruses belong to which viral family?

8. 
Which step of the retroviral life cycle involves the integration of the viral DNA into the host cell genome?

9. 
What is the process by which a retrovirus releases its new virions from the host cell?

10. 
What is the role of the envelope protein in a retrovirus?

11. 
Which of the following is not a step in the retroviral life cycle?

12. 
What is the function of the viral capsid in a retrovirus?

13. 
In the context of retroviruses, what does "LTR" stand for?

14. 
What is the function of the primer binding site (PBS) in retroviral reverse transcription?

15. 
Which retrovirus is known to cause cancer in chickens and was instrumental in the discovery of oncogenes?

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