Q. What enzyme is crucial for the replication of Retroviridae viruses?
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A.
DNA polymerase
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B.
RNA polymerase
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C.
Reverse transcriptase
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D.
Ligase
Solution
Reverse transcriptase is crucial for the replication of Retroviridae viruses, converting RNA into DNA.
Correct Answer:
C
— Reverse transcriptase
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Q. What is the primary mode of transmission for Retroviridae viruses?
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A.
Airborne droplets
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B.
Direct contact with infected fluids
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C.
Contaminated food and water
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D.
Vector-borne transmission
Solution
Retroviridae viruses, such as HIV, are primarily transmitted through direct contact with infected bodily fluids.
Correct Answer:
B
— Direct contact with infected fluids
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Q. What is the primary target cell type for HIV infection?
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A.
Erythrocytes
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B.
Neurons
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C.
CD4+ T cells
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D.
B cells
Solution
HIV primarily targets CD4+ T cells, which are crucial for the immune response.
Correct Answer:
C
— CD4+ T cells
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Q. What is the role of integrase in the life cycle of Retroviridae?
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A.
To replicate RNA
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B.
To integrate viral DNA into the host genome
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C.
To package viral proteins
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D.
To synthesize viral proteins
Solution
Integrase is responsible for integrating the viral DNA into the host genome during the life cycle of Retroviridae.
Correct Answer:
B
— To integrate viral DNA into the host genome
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Q. What type of genetic material do Retroviridae viruses contain?
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A.
Double-stranded DNA
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B.
Single-stranded RNA
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C.
Double-stranded RNA
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D.
Single-stranded DNA
Solution
Retroviridae viruses contain single-stranded RNA as their genetic material.
Correct Answer:
B
— Single-stranded RNA
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Q. Which disease is primarily caused by a virus from the Retroviridae family?
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A.
Tuberculosis
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B.
AIDS
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C.
Malaria
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D.
Hepatitis
Solution
AIDS (Acquired Immunodeficiency Syndrome) is primarily caused by the HIV virus, which is a member of the Retroviridae family.
Correct Answer:
B
— AIDS
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Q. Which of the following is a common method for diagnosing HIV infection?
-
A.
Blood culture
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B.
PCR test
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C.
Complete blood count
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D.
Urinalysis
Solution
PCR (Polymerase Chain Reaction) tests are commonly used to diagnose HIV infection by detecting viral RNA.
Correct Answer:
B
— PCR test
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Q. Which of the following is a well-known member of the Retroviridae family?
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A.
Influenza virus
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B.
HIV
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C.
Hepatitis B virus
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D.
Herpes simplex virus
Solution
HIV (Human Immunodeficiency Virus) is a well-known member of the Retroviridae family.
Correct Answer:
B
— HIV
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Q. Which of the following treatments is commonly used for HIV infection?
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A.
Antibiotics
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B.
Antiretroviral therapy
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C.
Vaccines
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D.
Corticosteroids
Solution
Antiretroviral therapy (ART) is the standard treatment for HIV infection.
Correct Answer:
B
— Antiretroviral therapy
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