Viral Structure, Function, and Classification Quiz

Test your knowledge on viral capsids, classification, replication, and more. Dive into virology with these intriguing questions!

Practice Learn Test

Which viral classification is based on the presence or absence of an envelope?

DNA viruses

RNA viruses

Enveloped viruses

Naked viruses

What distinguishes a bacteriophage from animal viruses?

Infects bacteria

Contains DNA

Has an envelope

Replicates in the cytoplasm

Which viral classification is based on the type of nucleic acid (DNA or RNA) present in the virion?

DNA viruses

RNA viruses

Enveloped viruses

Naked viruses

What is the primary function of a viral capsid?

Protection of the viral genome

Enzymatic activity

Facilitation of viral entry

Regulation of viral gene expression

Which viral structure is responsible for the recognition and binding to host cell receptors?

Viral envelope

Viral capsid

Viral spikes

Viral nucleic acid

In the context of viral replication, what does the term 'budding' refer to?

Release of mature virions from host cells

Synthesis of viral proteins

Assembly of viral particles

Integration of viral DNA into host genome

Which enzyme is responsible for unwinding the double-stranded DNA during viral replication?

DNA polymerase

Helicase

RNA polymerase

Ligase

Which viral family does the human immunodeficiency virus (HIV) belong to?

Herpesviridae

Retroviridae

Flaviviridae

Paramyxoviridae

What is the role of reverse transcriptase in retroviruses?

Replication of viral RNA

Synthesis of viral DNA from RNA

Translation of viral proteins

Viral attachment to host cells

#10

Which of the following is a characteristic feature of retroviruses?

Double-stranded RNA genome

Integration into host genome

Lytic life cycle

Enveloped capsid

#11

What is a common target for antiviral drugs that inhibit viral entry?

Reverse transcriptase

Viral polymerase

Protease

Viral fusion proteins

#12

What is a viroid?

A small infectious RNA molecule

A protein coat surrounding a viral genome

A complex of viruses

A bacterial virus

#13

Which viral structure is responsible for the transfer of genetic material between bacteria during horizontal gene transfer?