Molecular Biology of Viruses and Retroviruses Quiz

Test your knowledge with questions on viral characteristics, retroviral enzymes, HIV proteins, and more. Explore virology now!

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Which of the following is NOT a characteristic of viruses?

Presence of a cell membrane

Lack of cellular structure

Contain genetic material

Require a host to replicate

What is the genetic material of most viruses?

DNA

RNA

Protein

Both DNA and RNA

What is the function of the viral capsid?

To replicate viral DNA

To regulate viral gene expression

To package and protect viral genetic material

To bind to host cell receptors

What is the name of the process by which a virus releases newly formed virions from the host cell?

Exocytosis

Lysis

Endocytosis

Budding

Which retrovirus is known to cause acquired immunodeficiency syndrome (AIDS) in humans?

HTLV

HIV

Influenza virus

Herpesvirus

Which enzyme is responsible for the reverse transcription process in retroviruses?

RNA polymerase

DNA polymerase

Reverse transcriptase

RNA primase

What is the role of integrase in the retroviral life cycle?

Cleaves viral RNA

Incorporates viral DNA into host genome

Transcribes viral RNA into DNA

Assembles viral particles

Which of the following is a common method used by viruses to enter host cells?

Exocytosis

Pinocytosis

Phagocytosis

Receptor-mediated endocytosis

Which of the following is NOT a retrovirus?

HIV

Influenza virus

HTLV

Feline leukemia virus

#10

What is the primary target of HIV in the human body?

T lymphocytes

B lymphocytes

Macrophages

Neurons

#11

Which of the following is a key feature of retroviruses?

Rapid replication cycle

Integration of viral genome into host DNA

Lytic cycle only

Infection limited to bacteria

#12

What is the function of the HIV protein gp120?

Viral entry by binding to CD4 receptors

Reverse transcription of viral RNA

Integration of viral DNA into host genome

Assembly of viral particles

#13

What is the function of the HIV protein p24?

Inducing cell lysis

Inhibiting reverse transcription

Forming the viral capsid

Promoting viral integration