BIO2044 Tutorial

What is the main focus of the Baltimore classification system for viruses?

• The shape and size of viruses

• The relationship of the genetic material of the virus and the viral replication scheme

• The pathogenicity and cytopathology of viruses

• The means of transmission of viruses

Which of the following is a characteristic of the Picornaviruses?

• They are enveloped

• They have dsDNA

• They are unenveloped

• They replicate in the nucleus

Which virus is known for causing progressive multifocal leukoencephalopathy?

• Hepatitis B Virus

• JC Virus

• Rabies Virus

• HIV

What is the method of replication for retroviruses?

• Binary fission

• Assembly of pre-formed components

• Fusion

• Budding

Which type of viral genome is associated with Reoviruses?

• ssRNA, positive sense

• ssRNA, negative sense

• dsRNA

• ssDNA

What does the term "icosahedral" refer to in viral structure?

• A type of viral envelope

• A shape with 20 faces

• A type of viral tail

• A replication mechanism

Which virus uses reverse transcriptase as part of its replication process?

• Influenza Virus

• Hepatitis C Virus (group IV)

• HIV

• Norovirus (Group IV, nonenvelped, causing gastroenteristis, fecal oral route)

Which cultivation method is commonly used for viruses that do not grow in cell cultures or eggs?

• Inoculation of virus into animals

• Inoculation of virus into plant cells

• Inoculation of virus into bacteria

• Inoculation of virus into fungi

Which of the following statements best describes the term "pathogenesis"?

• The ability of viral causing disease in a host.

• The process by which viruses cause disease in a host.

• The treatment of viral infections.

• The vaccination against viral diseases.

What is the primary route of entry for influenza viruses?

• Gastrointestinal tract

• Urogenital tract

• Skin

• Respiratory tract