Virophages and Sub-viral Agents

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What is the mechanism by which Sputnik virophage reduces the efficiency of mimivirus replication?

It degrades the mimivirus genome

It competes with the mimivirus for host cell resources

It inhibits the mimivirus transcription machinery (correct)

It hijacks the mimivirus replication machinery

Which of the following is a characteristic of sub-viral agents?

They are composed of closed, circular ssRNAs

They encode genes for replication

They are larger than viruses

They require a helper virus for replication (correct)

What is the primary difference between viroids and viruses?

Viroids do not encode gene products (correct)

Viroids are larger than viruses

Viroids are composed of double-stranded DNA

Viroids encode gene products

What is the disease caused by prions in sheep?

Scrapie Signup and view all the answers

What is the function of the polymerases encoded by Sputnik virophage?

To replicate the Sputnik virophage genome Signup and view all the answers

What is the term for entities that are smaller than viruses but with virus-like properties?

Sub-viral agents Signup and view all the answers

What is the human disease caused by a satellite virus?

Hepatitis Delta Signup and view all the answers

What is the role of the host cell DNA-dependent RNA polymerase in the replication of viroids?

It is necessary for the replication of viroid RNA Signup and view all the answers

Which of the following is a characteristic shared by both viruses and sub-viral agents?

The presence of virus-like properties Signup and view all the answers

What is the reason why Sputnik virophage cannot replicate on its own?

It lacks the necessary genes for replication Signup and view all the answers

What is the term for the process by which Sputnik virophage reduces the efficiency of mimivirus replication?

Hijacking Signup and view all the answers

Which of the following is an example of a disease caused by a prion?

All of the above Signup and view all the answers

What is the primary function of the genes encoded by Sputnik virophage?

To encode proteins necessary for replication Signup and view all the answers

Which of the following is a characteristic unique to viroids?

The requirement for a host cell DNA-dependent RNA polymerase Signup and view all the answers