Virology and Molecular Biology Quiz

Challenge yourself with questions on viral characteristics, replication, and transmission. Test your understanding of virology now!

Practice Learn Test

Which of the following is not a characteristic of viruses?

They contain DNA or RNA

They can replicate outside of a host cell

They require a host cell to replicate

They can cause diseases in humans, animals, and plants

Which of the following is an example of a DNA virus?

HIV

Influenza virus

Rhinovirus

Herpes simplex virus

Which of the following is an example of a positive-sense RNA virus?

Influenza virus

Hepatitis B virus

Measles virus

HIV

Which of the following is not a method of viral transmission?

Airborne transmission

Vector-borne transmission

Vertically transmitted

Intravenous transmission

Which enzyme is responsible for replicating RNA into DNA in retroviruses?

DNA polymerase

RNA polymerase

Reverse transcriptase

Helicase

What is the primary function of the viral capsid?

To protect the viral genome

To facilitate viral attachment to host cells

To assist in viral replication

To regulate viral gene expression

Which of the following is not a mechanism by which viruses can enter host cells?

Endocytosis

Fusion with host cell membrane

Direct injection of genetic material

Exocytosis

What is the term used to describe a virus that infects bacteria?

Bacteriophage

Protozoa

Fungi

Algae

Which process is used by viruses to produce proteins using host cell machinery?

Translation

Transcription

Replication

Transduction

#10

Which enzyme is responsible for cutting viral RNA into smaller fragments during the replication cycle of RNA viruses?

Reverse transcriptase

RNA polymerase

Endonuclease

Helicase

#11

Which of the following is a characteristic feature of negative-sense RNA viruses?

They can directly translate their RNA genome into proteins

They require a DNA intermediate for replication

They have an envelope derived from host cell membrane

They contain RNA-dependent RNA polymerase

#12

Which of the following viruses is known to cause cancer in humans?

Ebola virus

Rabies virus

Human papillomavirus

Hepatitis A virus