Viral Classification and Lifecycle Quiz

What is the main reason why RNA viruses mutate more frequently?

They use enzymes that make more errors during replication

In viral classification, what is one of the ways viruses can be classified?

Capsid structure

What is the key step in a virus's lifecycle where receptors on the host cell bind to virus capsid proteins or envelope glycoproteins?

Attachment

Which process in the virus lifecycle involves synthesis of viral proteins and genome by the host cell?

Assembly Signup and view all the answers

What is the main difference between the Regressive hypothesis and the Progressive hypothesis?

The Regressive hypothesis proposes devolution from free-living cells, while the Progressive hypothesis suggests nucleic acid molecules escaping from cells. Signup and view all the answers

What is a key characteristic of the capsid structure of viruses?

The capsid can either be helical, icosahedral, or head-tail in shape. Signup and view all the answers

Which statement accurately describes the genome of a virus?

Virus genomes may be single-stranded or double-stranded, circular or linear, and in one piece or in multiple segments. Signup and view all the answers

What role do DNA and RNA play in directing host cells during a viral infection?

DNA directs the host cell to produce new virus copies, using the same genetic code as all living organisms. Signup and view all the answers

What is a characteristic of the lytic cycle of bacteriophages?

Phage uses bacterium for viral replication Signup and view all the answers

Which type of viral reproduction does not involve host cell death?

Budding Signup and view all the answers

What is a unique feature of bacteriophages' lifecycles, such as T4?

They alternate between lytic and lysogenic cycles Signup and view all the answers

Which virus causes AIDS and uses reverse transcriptase for its replication?

HIV Signup and view all the answers

What is the primary mode of transmission for plant viruses according to the text?

Transmission through damaged plant tissue Signup and view all the answers

In the context of viral infection, what distinguishes acute diseases from chronic infections?

Rapid onset and short duration Signup and view all the answers

Viral Classification and Lifecycle Quiz

Questions and Answers