Test 1 - Classification of Viruses (3)

Question 1

What is the system used to classify virus? What is this based on and how are viruses grouped?

Answer 1

The Baltimore classification system.

It is based on viral genome.

Viruses are classified into one of the seven groups dpening on their nucleic acid (DNA or RNA), strandness (single-stranded or double-stranded), sense, and method of replication

Question 2

______ is the only body charged by the international Union of Microbiological Societies with the task of developing, refining, and mainting a universal virus taxonomy.

Answer 2

The International Committee on Taxonomy of Viruses (ICTV)

Question 3

What does the ICTV consider when classifying viruses?

Answer 3

• Nature of genome and virus genetic diversity
• Virus Replication Strategies
• Virus Morphology

Question 4

Using the ICTV system, what is the appropriate suffix for the corresponding category?

• Order
• Family
• Subfamily
• Genus
• Species

Answer 4

• virales
• viridae
• virinae
• virus
• no suffix

Question 5

Define the structures pictured.

Answer 5

Inclusion bodies: An abnormal structure in a cell nucleus or cytoplasm, such as aggregates of proteins, having characteristic staining properties and associated especially with certain viral infections.

Question 6

Using the baltimore classification, what groups are used to categorize viruses that use reverse transcriptase?

Answer 6