Virus Classification: Methods and Characteristics

Which of the listed characteristics is NOT a primary criterion used in the traditional hierarchical virus classification system?

In the Baltimore classification system, what serves as the central point for categorizing viruses?

How does the genomic system classify viruses, especially in recent years?

A newly discovered virus has been found to contain a single-stranded RNA genome and lacks an envelope. According to the traditional hierarchical classification, to what level can this virus be classified with the information provided?

If a virus is classified as a positive-sense RNA virus by the Baltimore classification system, what key process must it perform upon entering a host cell?

Which of the following characteristics is NOT a primary factor in determining the shape of a virus?

If a newly discovered virus has a capsid that appears to have flat sides and edges when viewed under an electron microscope, which shape would be most likely?

A researcher identifies a virus that infects bacteria and has a distinct head-tail structure. The head appears icosahedral, and the tail is helical. How should this virus be classified based on its shape?

Which of the following viruses is known to have the largest diameter?

A newly discovered virus infects only specific strains of a bacterial species. This is an example of:

Which of the following factors is MOST crucial for a virus to successfully infect a host cell?

What is the function of the protein subunits that surround the RNA molecules in a non-enveloped helical virus such as the Tobacco Mosaic Virus (TMV)?

A virus is found to exclusively target and infect nerve cells in humans. What property of this virus allows it to exhibit such specific targeting?

Which factor primarily dictates a virus's capacity to infect a specific host cell?

A virus with a narrow host range is MOST likely to infect:

Before 1966, how were viruses commonly named?

The ICTV's (International Committee on Taxonomy of Viruses) classification system is MOST important from which taxonomic level?

What MUST occur before any translation can occur for a virus with a negative-sense (-) RNA genome?

Which characteristic is NOT a primary factor used in the classification of viruses?

Which of the following viruses is MOST likely to exhibit a broad host range?

What is the correct suffix for viral families in the hierarchical virus classification?

Which characteristic of viral capsomeres is most important for viral classification and identification?

What is the primary difference between a naked virus and an enveloped virus?

Which component of an enveloped virus is typically derived from the host cell during the budding process?

What is the term for a complete virus particle, including its envelope (if present)?

What advantage do envelope proteins provide to viruses regarding the host's immune system?

Which environmental condition is least likely to damage enveloped viruses?

Viruses are considered metabolically inert outside of a host cell. What does this imply about their ability to function?

What is the function of the glycoprotein spikes found on the surface of some viruses?

Why is the property of hemagglutination useful in viral identification?

A newly discovered microorganism is non-cellular and contains DNA enclosed within a protein coat. It can only replicate inside a host cell. Which of the following is the most likely classification of this microorganism?

Which of the characteristics listed is NOT a feature of viruses?

Outside of a host cell, a virus is metabolically inactive. How does the virus become active?

A researcher is studying a virus and finds that its genetic material is single-stranded RNA. Which of the following accurately describes the genetic composition of this virus?

What is the primary function of the capsid?

Which of the following components are found in ALL viruses?

Why are viruses not classified into any of the established biological kingdoms (e.g., Animalia, Plantae, Fungi)?